In these cases, health care providers will advise against sex during pregnancy. The rule of thumb is: when in doubt, don’t be embarrassed to consult your doctor, nurse or midwife.
However, there are two types of sexual behavior that ARE NOT safe for any pregnant woman:
• If a man engages in oral sex and blows air into the woman’s vagina. Blowing air can cause an air embolism (a blockage of a blood vessel by an air bubble), which can be potentially fatal for mother and child; and
• If a partner's sexual history is unknown and who may have a sexually transmitted disease such as herpes, genital warts, chlamydia or HIV. If the woman becomes infected, the disease may be transmitted to the baby with potentially dangerous consequences.
And of course, many expectant mothers find their desire for sex fluctuates during certain stages in the pregnancy. Many women find that sex becomes uncomfortable as their bodies get larger. Moreover, during last stage of pregnancy, women become preoccupied with the impeding delivery and the excitement of having a child.
Women and their husbands/partners need to keep the lines of communication open regarding their sexual relationship. They should talk about other ways to satisfy the need for intimacy, such as kissing, caressing, and holding each other. It may also be important to experiment with other positions for sex to find those that are the most comfortable.