I had my period about a week ago. On the pill but haven't taken it in a while(had to call in the priscription) anyway had some fun with the boyfriend with toys and him and it was fairly rough. Woke up hours later to blood stained underwear and when I went to the bathroom had a decent amount of blood when I wiped. Also a bit of what looks like uterine lining...help? Both myself and the BF are STI free. Used a condom as well and always do.