last week me and my boyfriend had sex, but during foreplay when he was fingering me, he was a bit rough and made me bleed. for a couple of days it was sore all over, then started to feel better, but now its excruciating. i looked in a mirror, and inside my vagina there is like a yellowy white patch, that constantly hurts, even more so when its touched or when i go to the toilet. did he cut me? and has it got infected?