Preparing for pregnancy ideally starts at least three months before you try to conceive. That window gives your body time to build up key nutrients, clear harmful exposures, and address any health conditions that could affect a pregnancy. Some steps, like starting folic acid, are simple. Others, like reviewing medications or updating vaccines, take a bit more planning. Here’s what to focus on.
Start Folic Acid Early
The single most important supplement to begin before pregnancy is folic acid. The CDC recommends 400 micrograms daily for all women who could become pregnant, starting at least one month before conception and continuing into pregnancy. Folic acid dramatically reduces the risk of neural tube defects, which are serious birth defects of the brain and spine that develop in the earliest weeks of pregnancy, often before you even know you’re pregnant.
If you’ve previously had a pregnancy affected by a neural tube defect, the recommended dose jumps to 4,000 micrograms daily, starting one month before conception and continuing through the first three months. Most prenatal vitamins contain at least 400 micrograms, so checking the label on whatever you’re already taking is a good first step.
Schedule a Preconception Checkup
A preconception visit with your doctor or midwife covers ground that a routine annual exam doesn’t. The goal is to identify anything that could complicate pregnancy and manage it beforehand. Chronic conditions like diabetes, high blood pressure, thyroid disease, and mental health disorders all influence pregnancy outcomes and are easier to optimize before conception than during it.
Expect your provider to review every medication you take, including over-the-counter drugs, herbal supplements, and vitamins. Some medications carry risks in early pregnancy, and switching to a safer alternative takes time. Your provider will also ask about alcohol, nicotine, and drug use, including prescription opioids used outside their intended purpose. These conversations aren’t judgmental; they’re about building a plan that keeps you and a future baby safe.
Genetic screening is another piece of the preconception visit. A family history review for both you and your partner can identify whether either of you carries genes for conditions like cystic fibrosis or sickle cell disease. STI screening is also part of standard preconception care, since infections like chlamydia can affect fertility and pregnancy health.
Update Your Vaccines
Certain infections that are mild for adults can be devastating during pregnancy. Rubella is a classic example: infection in the first trimester can cause serious birth defects. The MMR vaccine protects against rubella, but it’s a live vaccine, meaning you can’t receive it while pregnant. If a blood test shows you’re not immune, you’ll need the vaccine before conceiving and should wait at least one month afterward before trying to get pregnant.
Varicella (chickenpox) follows similar rules. Your provider should also confirm you’re current on your tetanus/pertussis booster and hepatitis B vaccine. An annual flu shot is recommended for everyone, with extra benefit if you’ll be pregnant during flu season.
Review What You Eat and Drink
Fish is one of the best sources of omega-3 fatty acids, which support fetal brain development, but mercury levels vary widely by species. The FDA recommends eating two to three servings per week (about four ounces per serving) of low-mercury fish like salmon, shrimp, sardines, tilapia, pollock, catfish, trout, and anchovies. Avoid high-mercury fish entirely: shark, swordfish, king mackerel, marlin, orange roughy, tilefish from the Gulf of Mexico, and bigeye tuna.
Caffeine is another area worth adjusting early. The recommended limit when trying to conceive is 200 milligrams per day, roughly two standard cups of coffee. Higher intake has been linked to fertility complications, so if you’re a three-or-four-cup-a-day person, tapering down before you start trying is easier than quitting abruptly.
Reduce Environmental Exposures
Chemicals that disrupt hormones are surprisingly common in everyday products, and they can affect egg quality, implantation, and early fetal development. The main culprits fall into a few categories.
Bisphenol A (BPA) and phthalates show up in plastic food containers, canned food linings, and fragranced personal care products. Phthalates in particular have been linked to pregnancy loss and earlier delivery. Practical steps: don’t microwave food in plastic, reduce canned food consumption, and choose fragrance-free products when possible.
Pesticide residues on produce have been associated with birth defects, lower IQ in children, and restricted fetal growth. Washing all produce thoroughly helps, and buying organic for items you eat most frequently (especially grains and root vegetables like rice, potatoes, and carrots) reduces exposure further. If you work in agriculture, wearing gloves and washing hands frequently matters. Removing shoes before entering your home keeps outdoor pesticides off your floors.
Heavy metals are a less obvious concern. Cadmium, found in tobacco smoke and certain industrial settings, accumulates in the ovaries and placenta and has been shown to reduce fertilization and implantation rates. Lead exposure from old paint or certain workplaces carries its own risks. If your job involves mining, battery manufacturing, or plastic production, talk with your provider about testing and exposure reduction.
Learn Your Fertile Window
Understanding when you ovulate makes a real difference in how quickly you conceive. Two tracking methods work well together.
Basal body temperature (BBT) is your body’s resting temperature, taken first thing in the morning before you get out of bed. After ovulation, BBT rises by about 0.5 to 1 degree Fahrenheit and stays elevated until your next period. The catch is that the most fertile days are the two to three days before that temperature rise, so BBT tracking is most useful after a few months of charting when you can predict the pattern.
Cervical mucus gives you a real-time signal. In the days leading up to ovulation, mucus becomes noticeably thinner, more slippery, and stretchy, similar to raw egg whites. This is your most fertile window. Having intercourse every day or every other day when you notice this type of mucus gives sperm the best chance of reaching an egg. After ovulation, mucus becomes thicker and less abundant. Keep in mind that medications, lubricants, and douching can alter how mucus looks and make it harder to read.
Your Partner’s Health Matters Too
Sperm takes roughly 70 to 90 days to develop, so the lifestyle choices your partner makes in the three months before conception directly affect sperm quality. Higher body mass index has been linked to lower sperm count and reduced sperm movement, so reaching a healthy weight is a concrete goal.
Heat is a surprisingly potent factor. Frequent use of saunas, hot tubs, and even prolonged sitting can raise scrotal temperature enough to impair sperm production. Switching to loose-fitting underwear and taking breaks from sitting help. Chemical exposure at work, particularly contact with solvents, pesticides, or heavy metals, calls for protective clothing and gloves.
Alcohol should stay moderate: no more than two drinks a day. Heavy drinking can interfere with erections and lower sperm quality. Testosterone supplements and other androgens are worth flagging specifically, because they can actually suppress the body’s own sperm production. If your partner uses testosterone, he should discuss this with a doctor well before you start trying.
One small practical note: some lubricants interfere with sperm movement. When you’re actively trying to conceive, it’s best to skip lubricant during sex or choose one specifically labeled as fertility-friendly.
Build Habits You Can Sustain
The preconception period isn’t about perfection. It’s about shifting your baseline so that by the time you conceive, your body is in the best position to support a pregnancy. Start your prenatal vitamin, cut back on caffeine, swap a few plastic containers for glass, and book that preconception appointment. These changes don’t need to happen all at once, but giving yourself at least three months before you start trying lets each one take hold.