I haven't had sex for over a year and I'm still really obsessed and paranoid about it. A day after I had, had sex they checked my urine at the E.R. I also had blood work. That very night I had something that felt like a UTI where you feel like you have to urine, but then when you go to the bathroom you can't go. I've read so many things about how symptoms sometimes don't even occur until after a decade at times. That's what really freaked me out, but wouldn't they had already detected something in my blood or urine that night if I had HIV or any other type or STD's if I really had one? Or does the urine or blood work test really determine weather or not I could have it? What kind of test do they usually do to determine it? I really wanna make sure I'm clean and not affect anyone else.