Q - I like it rough...

Alex
I've been on the pill since I was 17. I enjoy rough sex but lately I'm discharging the dark stuff when a guy has gone too deep. Normally it'll last the following day but this has been occurring for 3 full days now and my period isn't due for 2 weeks. Should I be concerned or just assume this is how my body will react from now on after rough/deep sex?