Sex During Pregnancy
Unless a doctor has recommended otherwise, it is perfectly safe to engage in sex during pregnancy if both partners desire it. It is a fallacy that sex during pregnancy causes a miscarriage. Some women find that their sex drive decreases at certain stages of pregnancy, while other women are the opposite. A man may also be affected, being more attracted to his pregnant wife, or deterred by the new life within her. As a general rule, the foetus will not be affected by intercourse. In the last couple of months, only certain positions will be comfortable for the woman (eg. woman sits atop lying man).
There is some evidence that an orgasm in the last week or two of pregnancy will induce labour.