So me and my dp have had normal sexual activity during pregnancy 3/4 times a weeks sorry if tmi. but on Friday night after DTD I had immediate what I thought were Braxton hicks (which I never had at all with my first) tightenings, pressure and lower back pain. After a few hours I began to panicking as they had not stopped and were now coming every 3mins! but weren't getting stronger. Anyway to cut a long story short ended up spending the night in hospital being monitored as they weren't sure if I was going in to early labour or not. after 8hours tightenings had stopped and I was allowed home. They told us that it was likely the sex had started it all off. No one said not to have sex again so Not sure what to do as I obviously don't want it to happen again.