When it comes to sex during pregnancy, your go-to positions may start feeling If you try missionary position after the first trimester, wedge a pillow under you so Missing: prostate. Is it safe to have sex during your pregnancy? What are the risks, if any? Are there positions we should avoid? WebMD explains pregnant sex. Can I Have Sex During Pregnancy Without Harming my Baby? As your pregnancy progresses, changing positions may become During the first trimester, some women commonly lose interest in sex because they are . Live Better With Diabetes · Treating Advanced Prostate Cancer · Diabetes and Diet.