How to Prepare Your Body for Pregnancy: A 3-Month Plan

Published April 5, 2026 · 13 min read

By Sarah Mitchell

The three months before you start trying to conceive may be the most important and most overlooked part of your entire fertility journey. Most people focus all their energy on timing intercourse or insemination around ovulation, but the truth is that the groundwork you lay in the weeks and months beforehand can dramatically influence your chances of conceiving and the health of your pregnancy.

Here is why three months matters: it takes approximately 90 days for an egg to mature from its dormant state to the point of ovulation, and roughly 74 days for sperm to develop fully. That means the eggs and sperm that will create your baby are being influenced right now by your nutrition, stress levels, sleep quality, and overall health. The choices you make today are shaping the quality of the reproductive cells that will come together three months from now.

This guide lays out a practical, evidence-based preconception plan organized into three phases. Whether you are planning to conceive naturally, through at-home insemination, or with clinical support, these steps apply universally. Think of it as building the strongest possible foundation before you begin actively trying.

Month 1: Build the Foundation

Schedule a Preconception Checkup

Your first step should be a visit with your OB/GYN or primary care provider specifically focused on preconception health. This is not a routine annual exam; it is a targeted visit where you and your provider review everything that could affect your ability to conceive and carry a healthy pregnancy. The CDC recommends a preconception visit for all women planning pregnancy.

Here is what your provider should cover:

• Medical history review: Chronic conditions like diabetes, hypertension, thyroid disorders, autoimmune diseases, and mental health conditions may need to be managed or optimized before pregnancy. Medications may need to be switched to pregnancy-safe alternatives.
• Immunization status: Make sure you are up to date on rubella (MMR), varicella (chickenpox), and flu vaccines. If you need an MMR or varicella vaccine, you should wait at least one month before trying to conceive because these are live vaccines.
• Baseline blood work: Request a complete blood count (CBC), thyroid panel (TSH and free T4), vitamin D level, ferritin (iron stores), and blood type with antibody screen. If you have risk factors, your provider may also recommend hemoglobin A1C, a lipid panel, or testing for sexually transmitted infections.
• Genetic carrier screening: Both you and your partner can be tested for carrier status for conditions like cystic fibrosis, sickle cell disease, spinal muscular atrophy, and fragile X syndrome. This information is most useful before conception so you can make informed decisions about next steps.
• Medication review: Some common medications are not safe during pregnancy, including certain acne treatments (isotretinoin), some antidepressants, antiepileptic drugs, and certain blood pressure medications. Your provider can help you transition to safer alternatives.
• Dental checkup: This one surprises people, but periodontal disease has been linked to preterm birth and low birth weight. Getting a dental cleaning and addressing any gum issues before pregnancy is a simple but meaningful step.

For a comprehensive checklist of everything to cover, see our preconception checklist.

Start Your Supplements

If you do nothing else in month one, start taking a prenatal supplement with adequate folate. Neural tube defects like spina bifida occur within the first 28 days of pregnancy, often before a woman knows she is pregnant. Having adequate folate stores before conception is your best protection.

The minimum recommendation is 400 micrograms of folic acid daily, but many experts now recommend 800 micrograms of methylfolate (the biologically active form of folate) for better absorption, especially if you carry the MTHFR gene variant that affects folate metabolism. An estimated 40 to 60 percent of the population carries at least one copy of this variant.

Beyond folate, a comprehensive preconception supplement should include:

• Vitamin D: 1,000 to 2,000 IU daily. Vitamin D deficiency is associated with reduced fertility, higher miscarriage rates, and pregnancy complications. Many women are deficient without knowing it.
• Iron: Particularly important if your ferritin levels are below 30 ng/mL. Building iron stores before pregnancy prevents the anemia that often develops as blood volume expands.
• Omega-3 DHA: 200 to 300 mg daily. Critical for fetal brain and eye development, and associated with improved egg quality.
• CoQ10: 200 to 600 mg daily. CoQ10 supports mitochondrial function in eggs, which is increasingly recognized as a key factor in egg quality, particularly for women over 35. Our CoQ10 fertility guide covers the research in depth.
• Iodine: 150 micrograms daily. Essential for thyroid function and fetal brain development.

Her Daily Formula was designed to provide all of these nutrients at evidence-based doses in a single daily serving, taking the guesswork out of building your supplement stack. If your partner is male, His Daily Formula provides targeted support for sperm quality, including zinc, selenium, folate, CoQ10, and L-carnitine. The Couples Pack combines both at a discounted price. For a detailed guide to choosing the right prenatal, see our prenatal vitamins guide.

Know Your Cycle

If you are not already tracking your menstrual cycle, start now. You do not need to begin ovulation prediction kits yet; simply recording the start date of each period and any symptoms you notice (cramping, cervical mucus changes, breast tenderness) will give you baseline data that becomes invaluable when you start actively trying.

A typical menstrual cycle lasts 21 to 35 days, with 28 days being the average. Ovulation generally occurs 12 to 16 days before your next period begins, not on day 14 as is commonly believed. Understanding your specific cycle length will help you time your fertile window accurately when you are ready. Our guide to understanding your menstrual cycle covers cycle phases and what to track.

Month 2: Optimize Your Lifestyle

Dial in Your Diet

The research on diet and fertility is remarkably consistent: a Mediterranean-style eating pattern rich in whole grains, fruits, vegetables, legumes, nuts, healthy fats (especially olive oil and omega-3s), and lean proteins is associated with improved fertility outcomes for both women and men. The landmark Nurses' Health Study found that women who followed this pattern had a 66 percent lower risk of ovulatory infertility.

Here are the key nutritional principles for preconception:

• Prioritize complex carbohydrates over refined ones. Choose whole grains, sweet potatoes, quinoa, and legumes over white bread, pasta, and sugary snacks. Complex carbs produce a slower, more gradual insulin response, which supports healthy ovulation.
• Eat healthy fats daily. Avocados, olive oil, nuts, seeds, and fatty fish (salmon, sardines, mackerel) provide the building blocks for reproductive hormones and support anti-inflammatory processes. Avoid trans fats, which have been directly linked to ovulatory infertility.
• Get adequate protein from varied sources. Include both plant proteins (beans, lentils, tofu) and lean animal proteins (poultry, fish, eggs). Some research suggests that replacing a portion of animal protein with plant protein may improve fertility.
• Eat the rainbow. Colorful fruits and vegetables are rich in antioxidants that protect eggs and sperm from oxidative damage. Berries, leafy greens, tomatoes, bell peppers, and citrus are particularly nutrient-dense choices.
• Choose full-fat dairy in moderation. The Nurses' Health Study found that one to two servings of full-fat dairy per day was associated with improved ovulatory function compared with low-fat dairy.

For a complete breakdown of what to eat and what to avoid, see our fertility diet guide.

Establish an Exercise Routine

Regular moderate exercise supports fertility through multiple mechanisms: it helps maintain a healthy weight, improves insulin sensitivity, reduces stress hormones, improves blood flow to reproductive organs, and supports overall cardiovascular health. The key word is moderate.

The sweet spot for fertility is approximately 150 to 300 minutes of moderate-intensity exercise per week, which works out to 30 to 60 minutes most days. Walking, swimming, cycling, yoga, and light strength training are all excellent choices. The goal is to feel energized after exercise, not depleted.

Excessive high-intensity exercise can actually impair fertility by disrupting the HPO axis and suppressing ovulation. If you are training for a marathon, doing CrossFit six days a week, or exercising intensely for more than an hour daily, consider scaling back to a more moderate regimen during your preconception period. Our exercise and fertility guide offers specific recommendations for balancing fitness with fertility goals.

Address Stress

Chronic stress elevates cortisol levels, which can interfere with the hormonal signaling that drives ovulation. While the relationship between stress and fertility is complex and not fully understood, multiple studies have found that women with higher self-reported stress levels take longer to conceive.

The goal is not to eliminate stress entirely, which is unrealistic, but to build regular stress-management practices into your routine before the additional emotional stress of TTC begins. Evidence-based approaches include:

• Mindfulness meditation: Even 10 to 15 minutes daily has been shown to reduce cortisol levels and improve emotional resilience.
• Yoga: Particularly restorative and fertility-specific yoga practices, which combine physical movement with breath work and mindfulness.
• Therapy or counseling: If you have anxiety, depression, or unresolved emotional concerns about becoming a parent, addressing these proactively is one of the most valuable things you can do.
• Sleep optimization: Aim for seven to nine hours per night. Sleep deprivation elevates cortisol and disrupts the hormonal rhythms that regulate ovulation.
• Social connection: Spending time with supportive friends and family, joining a TTC community, or working with a fertility coach can reduce the isolation that often accompanies the conception journey.

For more on the science behind stress and fertility, see our stress and fertility guide.

Month 3: Take Action

Start Tracking Ovulation

In your third month of preparation, it is time to add active ovulation tracking to your routine. This means going beyond cycle tracking and using tools that detect the physiological signs of approaching or confirmed ovulation.

The most accessible and reliable method for most women is ovulation predictor kits (OPKs), which detect the surge in luteinizing hormone that occurs 24 to 36 hours before ovulation. Begin testing around cycle day 10 for a 28-day cycle, or adjust based on your known cycle length.

Adding basal body temperature tracking gives you confirmatory data that ovulation actually occurred. The temperature shift that follows ovulation, caused by rising progesterone, confirms that your body is ovulating and that your luteal phase is beginning. After a month or two of combined OPK and BBT data, you will have a clear picture of your fertile window and ovulation timing.

If you are planning at-home insemination, this tracking data becomes essential for timing your attempts optimally. Most fertility experts recommend inseminating once on the day of or the day before the LH surge, and ideally a second time 12 to 24 hours later for maximum coverage of the fertile window.

Prepare Your Insemination Setup

If you are planning at-home insemination, month three is the time to get your logistics in order. This means choosing and ordering your insemination kit, arranging your sperm source (whether fresh from a known donor or frozen from a sperm bank), and doing a practice run with your kit so you are familiar with the equipment and process before your first real attempt.

Having everything ready and rehearsed reduces anxiety and lets you focus on relaxation and timing when the moment comes. Fumbling with unfamiliar equipment while watching your OPK turn positive is not the calm, empowering experience you want.

Fine-Tune Your Environment

The last month of preparation is a good time to address environmental factors that can affect fertility:

• Reduce exposure to endocrine disruptors. Switch to BPA-free food storage containers, choose fragrance-free personal care products, and avoid heating food in plastic containers. Common endocrine disruptors like BPA, phthalates, and parabens can interfere with reproductive hormones.
• Check your home for toxins. If you live in an older home, consider testing for lead. Ensure adequate ventilation if you use cleaning chemicals, and switch to non-toxic alternatives where possible.
• Review your partner's habits. If your partner is the sperm provider, their health matters too. Excessive heat exposure (hot tubs, saunas, laptops on lap), tight underwear, and prolonged cycling can all impair sperm quality. These effects are reversible, but it takes two to three months for sperm to fully regenerate.

What to Stop Now

Preparation is not just about what you add to your life. It is also about what you remove. The following changes should be made as early as possible in your preconception period, ideally by the end of month one.

Alcohol: While there is debate about whether light drinking affects fertility, the March of Dimes and most medical organizations recommend eliminating alcohol entirely when trying to conceive. There is no known safe level of alcohol during pregnancy, and since you may be pregnant before you know it, erring on the side of caution is wise. For male partners, heavy alcohol consumption is clearly associated with reduced sperm quality, so moderation at minimum is important.

Smoking and vaping: Smoking accelerates egg loss, damages sperm DNA, and increases the risk of miscarriage, ectopic pregnancy, and preterm birth. Quitting smoking is one of the single most impactful things either partner can do to improve fertility and pregnancy outcomes. If you need help quitting, talk to your provider about cessation resources.

Recreational drugs: Marijuana, cocaine, and other recreational drugs all have documented negative effects on fertility for both women and men. Marijuana use is associated with ovulatory dysfunction in women and reduced sperm concentration and motility in men.

Excess caffeine: Limit caffeine to 200 milligrams per day, roughly one 12-ounce cup of coffee. Higher intake has been associated in some studies with delayed time to conception and increased miscarriage risk, though the evidence is not definitive. Switching to half-caf is an easy compromise.

Certain supplements and herbs: Some herbal supplements that are popular in wellness circles can interfere with fertility or are unsafe during pregnancy. St. John's Wort, high-dose vitamin A (retinol form), and certain herbal detox teas should be discontinued. Always review your supplement list with your healthcare provider.

Supplements to Start Now

We covered the basics in month one, but here is a consolidated list of the supplements with the strongest evidence base for preconception support:

• Methylfolate: 400 to 800 mcg daily (the biologically active form is preferred over folic acid)
• Vitamin D3: 1,000 to 2,000 IU daily (adjust based on your blood levels)
• Omega-3 DHA: 200 to 300 mg daily from fish oil or algae-based supplements
• CoQ10 (Ubiquinol): 200 to 600 mg daily, particularly important for women over 35
• Iron: As needed based on ferritin levels (aim for ferritin above 30 ng/mL)
• Iodine: 150 mcg daily
• Choline: 450 mg daily (often overlooked but critical for fetal brain development)
• Vitamin B12: 2.6 mcg daily, especially important for vegetarians and vegans

For male partners, the evidence supports zinc (15 to 30 mg), selenium (55 to 200 mcg), CoQ10 (200 mg), L-carnitine (1 to 3 grams), and folate (400 mcg) for optimal sperm production and quality.

The simplest approach is a well-formulated fertility supplement that combines these nutrients at appropriate doses. Her Daily Formula and His Daily Formula were designed to cover these bases comprehensively, and the Couples Pack makes it easy for both partners to start at the same time.

Frequently Asked Questions

How far in advance should I start preparing for pregnancy?

Ideally, begin preparing at least three months before you start trying to conceive. This gives your body time to build up nutrient stores, especially folate and iron, and allows both partners to make lifestyle changes that improve egg and sperm quality. Sperm takes approximately 74 days to mature, and egg development begins about 90 days before ovulation, so a three-month lead time is biologically meaningful.

What supplements should I take before getting pregnant?

At minimum, start taking a prenatal vitamin with at least 400 to 800 micrograms of folate or methylfolate at least one month before trying to conceive. Other beneficial supplements include vitamin D (1,000 to 2,000 IU daily), omega-3 DHA (200 to 300 mg daily), CoQ10 (200 to 600 mg daily for egg quality support), and iron if your levels are low. A comprehensive fertility supplement like Her Daily Formula can simplify this by combining these nutrients in one formulation.

Do I need a preconception checkup?

Yes, a preconception checkup is highly recommended. Your provider can review your medical history, check your immunization status, screen for conditions like thyroid disorders or diabetes, review any medications you are taking for pregnancy safety, and order baseline blood work including CBC, thyroid panel, and vitamin D levels. The CDC recommends a preconception visit for all women planning pregnancy.

How much caffeine is safe when trying to conceive?

Most fertility experts recommend limiting caffeine to 200 milligrams per day or less when trying to conceive, which is roughly equivalent to one 12-ounce cup of drip coffee. Some studies suggest that higher caffeine intake may be associated with longer time to conception and increased risk of early miscarriage, though the evidence is not conclusive. Switching to half-caf or limiting yourself to one cup per day is a reasonable precaution.