I am 27 weeks pregnant and I have placenta previa. I have never bled at anytime during my pregnancy or after sex or anything.lately my boyfriend and I have started to have sex again even though I was warned not to. I have not bled yet.. but it feels like my son is pressing down on my lower abdomen afterwards. I don't think its contractions but I don't know.. I want to know what's happening and if I'm OK.. my son still kicks so I don't think he is hurt but I want to hear from an ob gyn