The most important thing you can do when trying to get pregnant is have sex during your fertile window, which spans about seven days each cycle. Beyond timing, a combination of supplements, lifestyle adjustments, and knowing your body’s signals can meaningfully improve your chances. Most healthy couples who time intercourse well conceive within the first few cycles, with up to 90% pregnant by the third cycle and 98% by the sixth.
Start Folic Acid Before You Conceive
Every woman trying to get pregnant should take 400 micrograms of folic acid daily. 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. The CDC recommends starting at least one month before conception, though many providers suggest beginning even earlier since the timing of conception is unpredictable.
A standard prenatal vitamin will contain the right amount. If you’re not ready for a prenatal, a standalone folic acid supplement works just as well for this purpose.
Know Your Fertile Window
Your fertile window includes the five days before ovulation, the day of ovulation itself, and the day after. That’s roughly seven days per cycle when pregnancy is possible. Sperm can survive inside the reproductive tract for up to five days, which is why sex in the days leading up to ovulation (not just on the day of) gives you the best odds.
You can track ovulation several ways. Over-the-counter ovulation predictor kits detect a hormone surge that happens one to two days before you ovulate. Tracking basal body temperature (your resting temperature first thing in the morning) can confirm ovulation after it happens, helping you learn your pattern over a few cycles. Cervical mucus also changes as ovulation approaches, becoming clear, slippery, and stretchy. Using a combination of these methods gives you the most reliable picture of when you’re fertile.
How Often to Have Sex
The highest pregnancy rates occur in couples who have sex daily or every other day during the fertile window. If that feels like too much pressure, having sex every two to three days throughout the month, starting soon after your period ends, is a solid alternative. This approach ensures you’re unlikely to miss your fertile window even if your tracking isn’t perfect.
There’s no need to “save up” sperm by abstaining for days. Frequent ejaculation keeps sperm fresh and doesn’t meaningfully reduce count in men with normal fertility.
Choose the Right Lubricant
Most personal lubricants, and even saliva, can slow sperm movement and reduce your chances of conceiving. If you need lubrication, look for products specifically labeled “fertility-friendly” or “sperm-friendly.” The key ingredient to look for is hydroxyethylcellulose, which closely mimics natural vaginal mucus and doesn’t interfere with sperm motility. Avoid lubricants with fragrances or parabens, and skip household oils like coconut oil, which aren’t designed for this purpose.
Weight and Fertility
Your body weight plays a real role in how quickly you conceive. Women with a BMI in the range of about 21 to 22 have the highest probability of conception. As BMI rises above that, fertility gradually decreases. Women who are overweight or obese before pregnancy take longer to conceive on average and have a modestly higher risk of reduced fertility compared to women at a normal weight.
Being underweight doesn’t appear to significantly affect conception odds in the same statistical way, but very low body weight can disrupt ovulation entirely. If your periods are irregular or absent, that’s a strong signal that your body may not be ovulating consistently.
Caffeine, Alcohol, and Diet
Moderate caffeine and alcohol intake don’t appear to impair ovulation or meaningfully reduce fertility. A large study of nurses found no link between moderate consumption of either and ovulation-related infertility. That said, most guidelines suggest keeping caffeine under about 200 to 300 milligrams per day (roughly two cups of coffee) as a reasonable precaution, especially since you may not know you’re pregnant right away.
For alcohol, there’s no established “safe” amount during pregnancy itself, so many women choose to cut back or stop while actively trying. The transition from trying to conceive to early pregnancy can happen without you realizing it for weeks.
A diet rich in fruits, vegetables, whole grains, and healthy fats supports reproductive health for both partners. Foods high in antioxidants, omega-3 fatty acids, and key micronutrients like zinc and selenium are particularly beneficial for sperm quality.
What Your Partner Can Do
Fertility is a two-person effort. Male factors contribute to roughly half of all fertility challenges, and lifestyle changes can make a real difference in sperm quality.
Smoking is one of the most damaging habits for sperm. Across dozens of studies involving nearly 30,000 men, smoking was associated with lower sperm counts (by about 32 million per milliliter), reduced motility, and more abnormal sperm shape. Men who smoke more than 20 cigarettes a day are hit hardest. The good news: quitting tobacco leads to measurable improvements in sperm quality.
Heat exposure is another significant factor. Sperm production requires a temperature slightly below core body temperature, which is why the testicles sit outside the body. Prolonged heat from hot tubs, saunas, laptops on the lap, or tight underwear can damage sperm count, motility, and DNA integrity. Excess body fat around the midsection also raises scrotal temperature, which is one reason obesity in men is linked to lower sperm counts.
A diet heavy in fruits, vegetables, nuts, seeds, and seafood supports sperm health. Zinc, selenium, vitamin C, vitamin E, and omega-3 fatty acids are the micronutrients most consistently linked to better sperm quality in research.
Realistic Conception Timelines
When couples carefully time intercourse around the fertile window, conception rates are surprisingly high. In one study of 50 couples with normal fertility using well-timed intercourse, 76% conceived in the very first cycle. By the third cycle, 90% were pregnant, and by the sixth cycle, 98% had conceived.
These numbers represent couples who were actively tracking fertility and timing sex accordingly. Without targeted timing, the per-cycle success rate is closer to 15 to 25%, and about 80 to 85% of couples conceive within a year of regular unprotected sex. The difference highlights just how much good timing matters.
When to Get a Fertility Evaluation
The American College of Obstetricians and Gynecologists recommends a fertility evaluation if you haven’t conceived after one year of regular, unprotected sex. If you’re over 35, that timeline shortens to six months. If you’re over 40, it’s worth having a conversation with your doctor before you start trying, since both egg quantity and quality decline more steeply at that point.
Certain signs warrant an earlier conversation regardless of age: very irregular or absent periods, a history of pelvic inflammatory disease, endometriosis, prior cancer treatment, or a known issue with your partner’s reproductive health. An evaluation doesn’t mean something is wrong. It’s a starting point to identify anything that might benefit from treatment sooner rather than later.