Mommas! I need advice please.. I know we are not doctors. I'm just wanting yalls opinion first…

Mommas! I need advice please.. I know we are not doctors. I'm just wanting yalls opinion first before anything. So last night fiance and I was doing the deed, before we were done, his sister knocked and I was laying there and liquid started leaking out, then but 20 mins later we finished, and then I had like 5 or 6 contractions back to back... they wasn't painful it was just super uncomfortable. Now I'm super crampy in my lower back today and lower tummy, I still feel her move, though... I'm 34w4d. I go tomorrow to get my mckenna shot. So I'll talk to my doctor but it just worries me bc my last baby I had her at 34w1d. And all I had was crampyness in my back.