What is going on with me...

So for some reason lately each time my bf and I have sex (which has been pretty often as we are TTC #2) I bleed during sex sometimes it's a lot sometimes it's not. He isn't overly large and we aren't acting like jackhammers (haha sorry if that's TMI) it doesn't hurt it's more just annoying and frustrating for me I think. According to this app I was supposed to get my period Wednesday.....and I haven't had any signs of it coming (except yesterday when we had sex I bled) but that was it nothing before or since then. This morning I took a test and it was negative....any advice or anyone that can relate?!