heres the story, im a straight male and i had sex with i girl i knew a little bit, i heard she may have been around. i wore a condom. i was a little buzzed and the condom slipped off when i was thrusting. i came inside her. she didnt get preganat or anything. i had absolutely no sores ,scrapes or cuts on my penish. i told her i was worried about contracting anything like hiv. she said definitely that she is clean. was this a high risk. its been 9 months, i never got any kind of symptoms of any std, i seem perfectly healthy, no drip or anything remotely like that. what kind of risk did i really expose myself to???