Preparing for pregnancy ideally starts at least three months before you try to conceive. That window gives you time to build up nutrient stores, update vaccinations, address chronic health conditions, and reduce exposures that could affect a developing baby. Some steps, like stopping certain types of birth control, may need even more lead time. Here’s what to prioritize.
Start Folic Acid Early
Every woman who could become pregnant should take 400 micrograms of folic acid daily. This B vitamin is critical for the earliest stages of spinal cord and brain development, which happen before most people even know they’re pregnant. The CDC recommends starting at least one month before conception, though many providers suggest three months to build adequate levels.
If you’ve had a previous pregnancy affected by a neural tube defect, the recommended dose jumps to 4,000 micrograms daily, starting at least a month before conception and continuing through the first trimester. Your provider can help you determine the right amount.
Schedule a Preconception Visit
A preconception appointment is different from a routine annual exam. It’s specifically designed to identify anything that could complicate pregnancy or affect your baby. Your provider will review your immunization history, screen for sexually transmitted infections if appropriate, assess your mental health, and ask about alcohol, nicotine, and drug use, including prescription medications that may need to be switched to pregnancy-safe alternatives.
This visit is also when you’ll discuss genetic carrier screening. Carrier screening checks whether you or your partner carry genes for conditions like cystic fibrosis, spinal muscular atrophy, sickle cell disease, or Tay-Sachs disease. You can be a carrier without any symptoms. Roughly 1 in 10 African Americans carries the sickle cell trait, for example. If both partners carry the same gene variant, there’s a chance the baby could be affected. Knowing this ahead of time gives you options and information rather than surprises.
Screening recommendations vary by ethnic background and family history. People of Ashkenazi Jewish, French-Canadian, or Cajun descent are typically offered Tay-Sachs screening. Those of African, Mediterranean, Southeast Asian, or West Indian descent may need a hemoglobin test to check for sickle cell or thalassemia traits. Expanded panels that screen for dozens of conditions at once are increasingly available regardless of background.
Get Your Vaccinations Up to Date
Certain infections that are mild for adults can be devastating during pregnancy. Rubella (German measles) and chickenpox are the two biggest concerns, and both are preventable with vaccines you may have received as a child. The problem is that immunity can fade over time.
A simple blood test during your preconception visit can check whether you’re still protected. If you need the MMR (measles, mumps, rubella) or chickenpox vaccine, you’ll need to get them before pregnancy because both are live virus vaccines that can’t be given once you’re pregnant. The CDC recommends waiting at least one month after vaccination before trying to conceive. Your provider will also check that you’re current on tetanus/whooping cough (Tdap) and hepatitis B.
Manage Chronic Health Conditions
If you have a thyroid condition, diabetes, high blood pressure, epilepsy, or an autoimmune disorder, pregnancy planning means getting those conditions as well controlled as possible before conception. Thyroid health deserves special attention because even mild dysfunction can affect fertility and early fetal brain development.
For women with Hashimoto’s thyroiditis or hypothyroidism, the American Thyroid Association recommends keeping TSH levels below 2.5 during pregnancy. Research suggests that women with Hashimoto’s may need their pre-pregnancy TSH to be 30 to 50 percent lower than that target to maintain normal levels once pregnancy begins, since pregnancy increases thyroid hormone demand significantly. If you’re on thyroid medication, your dose will likely need adjusting, so getting baseline levels checked before conception is important.
Visit the Dentist
This one surprises people, but dental health directly connects to pregnancy outcomes. Gum disease (periodontitis) has been linked to preterm birth and low birth weight. Pregnancy hormones also make your gums more susceptible to inflammation and bleeding, so starting pregnancy with healthy gums gives you an advantage. Get a cleaning and address any cavities, infections, or gum issues before conceiving. Dental X-rays and local anesthesia are safe during pregnancy, but it’s easier to handle major work beforehand.
Factor In Your Birth Control Timeline
How quickly fertility returns depends on what type of contraception you’ve been using. A large study from Boston University tracked how long it took women to start ovulating normally after stopping different methods:
- IUDs (hormonal and copper) and implants: about 2 months on average
- Birth control pills and vaginal rings: about 3 months
- Contraceptive patches: about 4 months
- Injectable contraceptives (the shot): 5 to 8 months
These are averages, not guarantees. Some women ovulate within weeks of stopping the pill, while others using injectables may wait close to a year. If you’re on the shot and planning to conceive by a certain time, you’ll want to stop well in advance and use a barrier method in the interim.
Your Partner’s Health Matters Too
Preconception health isn’t just a checklist for the person who will be pregnant. Sperm quality is directly affected by lifestyle factors, and changes take about three months to show up because that’s how long it takes for new sperm to fully develop.
Weight is a significant factor. Obese men are 81 percent more likely to produce no sperm at all compared to men at a healthy weight, and 42 percent more likely to have a low sperm count. The encouraging news is that research shows even an eight-week low-calorie diet can improve semen quality in obese men if the weight loss is maintained.
Smoking reduces sperm count, volume, and motility at any level, even under 10 cigarettes a day. Daily alcohol consumption hurts semen volume and sperm shape, though moderate drinking (under seven drinks per week) appears to have no measurable effect. Anabolic steroids have long-term effects on sperm production. Marijuana, cocaine, opioid painkillers, and some antidepressants can also lower fertility or sexual function. A diet rich in omega-3 fatty acids, zinc, selenium, vitamin C, vitamin E, and folate is linked to better sperm quality.
Reduce Chemical Exposures
You don’t need to overhaul your entire life, but a few targeted changes can reduce your exposure to chemicals linked to fertility problems and birth complications. ACOG recommends avoiding products containing phthalates, parabens, oxybenzone, and triclosan when possible. These are common in fragranced lotions, some sunscreens, antibacterial soaps, and cosmetics. Checking ingredient labels or switching to fragrance-free products is a simple starting point.
In the kitchen, don’t heat food or drinks in plastic containers, and avoid cooking with nonstick pans that have damaged coatings, since the nonstick chemicals have been associated with low birth weight. Skip food storage in pewter, brass, or lead crystal, all of which can leach lead. If your home has old lead paint, do not attempt to remove it yourself.
Mercury in fish is another concern worth addressing before pregnancy. Avoid high-mercury species like shark, swordfish, king mackerel, marlin, orange roughy, bigeye tuna, and tilefish. Limit white albacore tuna to 6 ounces per week. Lower-mercury options like salmon, sardines, and shrimp are safe and provide omega-3s that support fetal brain development.
Build Healthy Habits Now
Pregnancy is easier on a body that’s already moving regularly and eating well. You don’t need a specific “fertility diet,” but building a pattern of balanced meals, consistent physical activity, and adequate sleep before conception sets you up for a smoother first trimester, when fatigue and nausea can make healthy habits harder to maintain. If you drink alcohol, the safest approach is to stop once you start trying, since there’s no known safe amount during pregnancy and you won’t know you’ve conceived right away.
Stress management is worth thinking about too. Not because stress “prevents” pregnancy in most cases, but because the preconception period can become anxious and goal-oriented quickly. Having a stress outlet already in place, whether that’s exercise, therapy, or something else, helps you navigate the months ahead with more resilience.