I have felt an uncomfortable feeling in my vagina for a couple months now. Like itchy but not severe just uncomfortable... Well last week I had kinda rough sex with my bf... Last Saturday to be exact and there was a good bit of blood afterward and I have had an aching in my uterus ever since. Like sometimes it feels like the start of my period and sometimes the pains get sharp. Either way it's pretty constant and scaring me. I have been on birth control for two years and I take it correctly. Sometimes the pain causes nausea similar to starting period but like I said isn't due until mid may... What do you guys think this could be? An std? I've been with the same guy for a year now we don't use condoms though. Or could the rough sex have injured me somehow?