I know it helped with my delivery. Less than 24 hours after intercourse, my son was born. As a matter of fact, we pretty much went from the bed to the hospital. I think it has something to do with the muscles that contract during orgasm, but I'm not sure. It didn't do anything for my first two births. Ofcourse this third child was ready to see the world any way and shot out like a bolt. So maybe there isn't much to the myth. Check with your doctor to see if it's okay and then if it is, have some fun!