The best time to prepare for pregnancy is three to six months before you start trying. That window gives you enough time to update vaccinations, adjust medications, improve habits, and catch any health issues that could affect fertility or your baby’s development. Here’s what to prioritize.
Schedule a Preconception Checkup
A preconception visit is different from a regular annual exam. Your provider will evaluate your health specifically through the lens of pregnancy readiness. Expect a physical exam covering your weight, blood pressure, and vital signs, along with a pelvic exam to check the health of your uterus, cervix, and ovaries. You’ll also get blood work to confirm your blood type and screen for sexually transmitted infections, plus a Pap smear if you’re due for one.
Bring a full list of every medication you take, including prescriptions, over-the-counter drugs, herbal supplements, and vitamins. Some medications need to be tapered off or swapped for pregnancy-safe alternatives, and that process can take weeks. The CDC notes that even common drugs like acetaminophen have shown associations with neurological conditions in children when used chronically during pregnancy, so it’s worth reviewing everything early.
Start Folic Acid Now
Folic acid is the single most important supplement to begin before conception. The U.S. Public Health Service recommends 400 micrograms daily for all women who could become pregnant. This B vitamin 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 had a previous pregnancy affected by a neural tube defect, the recommended dose jumps to 4,000 micrograms daily. Most prenatal vitamins contain at least 400 mcg, so switching to a prenatal now is an easy way to cover this.
Update Your Vaccinations
Certain infections that are mild for adults can be devastating during pregnancy. Rubella (German measles) can cause miscarriage or severe birth defects, and chickenpox poses serious risks too. Your provider will check whether you’re up to date on the MMR (measles, mumps, rubella) vaccine and varicella vaccine. If you need either one, timing matters: both are live vaccines, and you should wait at least one month after receiving the MMR vaccine before trying to conceive. Your immunity can be confirmed with a blood test.
Your provider may also recommend hepatitis B testing. A baby whose mother has hepatitis B is at high risk of infection during delivery, so knowing your status ahead of time allows for vaccination if needed.
Consider Genetic Carrier Screening
Carrier screening looks for gene variants that could cause serious conditions in your baby, even if you and your partner are perfectly healthy. You can carry a gene for a condition like cystic fibrosis or spinal muscular atrophy without any symptoms yourself. If both parents carry the same gene variant, the baby has a 25% chance of being affected.
The American College of Obstetricians and Gynecologists recommends that screening for cystic fibrosis and spinal muscular atrophy be offered to all women considering pregnancy. Additional screening for Tay-Sachs disease is recommended if either partner is of Ashkenazi Jewish, French-Canadian, or Cajun descent. Anyone with a family history of a genetic condition should be offered targeted screening as well. If you’re found to be a carrier, your partner can then be tested so you both understand the actual risk and can explore your options before conceiving.
Get to a Healthy Weight
Weight has a direct, measurable effect on your ability to conceive. The optimal BMI range for fertility falls between 18.5 and 24.9. In women who ovulate normally but have difficulty conceiving, the chance of spontaneous conception drops by about 5% for each single-point increase in BMI above the normal range. The numbers get more striking over time: after 12 menstrual cycles, 48% of women with a normal or slightly overweight BMI had conceived, compared to just 18% of women with a BMI over 30.
Being significantly underweight can also disrupt ovulation. If your weight falls outside the healthy range in either direction, even modest changes of 5 to 10 percent of your body weight can improve your hormonal balance and ovulation regularity.
Cut Back on Caffeine and Alcohol
Heavy caffeine intake before conception, defined as more than 300 milligrams per day (roughly two to three standard cups of coffee), increases the risk of miscarriage by about 31%. Ideally, you’d taper down to minimal caffeine well before trying to conceive, since the goal is to be at a lower intake by the time implantation occurs.
For alcohol, the threshold for concern is more than seven drinks per week or more than three drinks on a single occasion. There is no established safe level of alcohol during pregnancy, so reducing your intake during the preconception period builds the habit you’ll need once pregnant. If your partner drinks heavily, that’s worth addressing too, since alcohol affects sperm quality.
Plan Your Contraception Transition
How quickly fertility returns depends on which method you’ve been using. A large meta-analysis found that about 83% of women became pregnant within 12 months of stopping contraception, regardless of the method. But the type matters for expectations. Former oral contraceptive users had the highest 12-month pregnancy rate at about 87%. IUD users were close behind at roughly 85%. Implant users conceived at a rate of about 75%, and injectable contraceptive users came in at around 78%.
There’s no evidence that any modern contraceptive causes long-term fertility damage. The brief delay with hormonal methods simply reflects the time it takes for the hormones to clear your system. If you’ve been on injectables, you may want to switch to a shorter-acting method a few months before your target conception date to give your cycles time to regulate.
See Your Dentist
This one surprises people, but a dental checkup belongs on your preconception list. Gum disease is linked to several pregnancy complications, including preterm delivery, low birth weight, and preeclampsia (dangerously high blood pressure during pregnancy). The connection runs through inflammation: bacteria from infected gums can enter the bloodstream and trigger inflammatory responses that affect the placenta. Getting a cleaning, treating any cavities, and addressing gum disease before pregnancy removes a preventable risk factor. Dental work is also simpler to schedule and more comfortable before pregnancy than during it.
Your Partner’s Health Matters Too
Sperm take roughly two to three months to fully develop, so lifestyle changes your partner makes today won’t show up in sperm quality for about a cycle’s length. That means the preconception period is the right time for partners to address their own health. Factors that reduce sperm quality include excessive heat exposure (hot tubs, laptops on the lap), smoking, heavy alcohol use, obesity, and prolonged periods of abstinence, which can increase DNA damage in sperm.
Your partner should also review their medications with a provider. Some prescriptions affect sperm production or carry risks if traces are present in seminal fluid. A basic health checkup to address weight, blood pressure, and any untreated conditions rounds out the picture. Conception is a two-person project, and optimizing both sides improves your odds.
Build a Timeline
Three months before you want to start trying is the sweet spot for most of these steps. That gives you time to complete any vaccine waiting periods, switch medications, see results from lifestyle changes, and get carrier screening results back. If you’re on injectable contraception, consider a six-month runway. Start folic acid immediately, even if everything else takes a bit longer to arrange. The earliest weeks of pregnancy are when neural tube development happens, and you want that protection in place from day one.