This is an absolutely normal phenomena .during pregnancy many women do not feel like having sex but they definitely need more love, affection and care. The best way to cope up with it is to talk about it with your partner and dispel off the fears.

Orgasm during pregnancy is safe but there is a surge of hormones and the prostaglandin hormones in the semen may initiate contractions. So if you at high risk for premature labor or threatened miscarriage, it may be best to avoid it. In addition women who are near term and want to induce labor sometimes find that sexual intercourse can initiate labor.

You are also advised to avoid sex if the bag of waters has ruptured an important precaution to protect the baby and avoid infection.

Sex during pregnancy is considered to be safe. Nature has provided excellent cushioning and protection for the fetus, making it impervious to harm. The baby floats in a bag of water held within the thick muscular uterus. The uterus is further protected by strong abdominal wall muscles and the bony pelvis. Even the cervix is closed by the thick mucus plug. so you can see that nature is pretty sure that it will protect the baby. So why do you worry?