So i am 18 weeks pregnant and lately i been feeling this weird pressure on my lower stomach were the baby is like tightening idk like rock hard i can feel it beeing hard rock ans feels pressure down feels like its gonna fall out of my vagina and also my vaa?gina feels like when u c+um after how its hard to pee...but the one time i was about to c+um and while i was on middle of it my stomach felt that that rock thing inside is about to rip thru my stomach and go out it start feeling so bad i almost was without breath..im so afraid to have a orgasm now what could this be pls any advice/experience/opinion?? I would greatly appreciate,sorry for TMI