Nov 15, - When you're trying to have a baby, a lot comes down to timing. After all, nature gives us a brief window each month to conceive. While it's. Mar 17, - When (and How Often) to Have Sex to Get Pregnant. How often should you have sex when trying to conceive? Timing sex to get pregnant is the focus of most couples who are trying to conceive. However, if you have sex often enough, timing sex for ovulation may not be necessary. The best time to get pregnant is the two to About Baby-Making Sex · Sex before you ovulate · Fertile Window · Semen Analysis.