PAIN after sex! Tmi

Last night during sex I had the worst braxton hicks ( this is my second pregnancy, this was worse than my first labor) I had 7 Probably in an hours time. This was after sex (I did not orgasm) they were not consistent and I did not have any spotting. They eventually stopped and I fell asleep. This morning I am extremely nauseated (haven't been since my first trimester). Is this normal at all? I am 26 weeks.