For most women it's safe to have sex at any stage of pregnancy. Your baby is cushioned against jouncing inside the amniotic sac and guarded against infection by the mucus plug blocking the cervix. There are only a few exceptions to this rule. Talk to your provider about any of these concerns:
- A sexually transmitted disease
- An incompetent cervix (the cervix opens prematurely)
- A history of premature labor, or signs that you're going into labor
- Placenta previa (the placenta blocks all or part of the cervix
- Placental abruption (the placenta separates from the uterine wall)
- Ruptured membranes
Originally published in You & Your Baby: Pregnancy.
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