Originally Posted by Mamaof3

Sex during pregnancy is fine as long as it remains comfortable for the mom-to-be. The reason that it helps promote delivery is that when a pregnant woman reaches orgasm, there is a release of oxytocin which is what promotes good contractions. Nipple stimulation does the same thing tho in smaller amounts. Oxytocin is the body's natural hormone - and when a woman doesnt contract well enough, she is given the man-made form of this hormone called Pitocin.