This position is supported by science, too — at least one Taiwanese study found increased sexual satisfaction for pregnant women who control penetration by being on top of the partner. First Trimester: Karolin Schnoor You on top Have your partner lie down and straddle him from above. If you have oral sex, your partner should not blow air into your vagina, as during pregnancy this can cause an air bubble to block a blood vessel. Second Trimester: Many women note a decrease in interest, comfort, and desire in the third trimester, according to several studies. This can simply just be about caring for each other in a sensual way. Plus, here's how to have better sex after childbirth , too. Table Top Women's Health This position is great for the third trimester, since it provides a comfortable position for you, and also easy access for your partner, says Vanderlinde. Late in pregnancy, when your belly has gotten bigger than you ever thought possible, you could find it tough to maneuver into this position. Another good choice for late pregnancy, this position will control thrust and keep weight off your belly. Spooning , By lying on your side, you take any pressure off of your back and uterus and manage to get your belly out of the way, says Dweck. Experiment with this during the first and second trimesters, but as your belly grows, you may find it more difficult to hold this position. Putting your hands on the top of the headboard at the same time can help you stabilize yourself as well as save your energy and give you more angle options, Van Kirk says. Adjust for comfort by widening your stance or leaning back to keep belly weight from tilting you forward. If you do want to have sex, embrace the ubiquitous three-word Nike slogan.