that you can have a bit of bloody mucus after sex, but it doesn't mean anything bad usually
I spent 5 hours at my local EPU yesterday as this happened to me, my midwife had referred me. When I explained to the MW at the hospital what the problem was, she asked if I had had sex in the last 48 hours, I said yes and was sent home relieved but a bit miffed that I didn't know this already, this is my 3rd pg.
RANT OVER