I am 18 and I've been paranoid all my life. I am not sure what I am suffering from. I get worried over many things. Last week, I took a huge dump before going out without wiping properly. I felt irritation down there whilst eating with friends. After a few drinks I hoped onto a taxi where I talked to people over the phone and started doing things on my phone (i don't quite remember what i think it was looking at pictures). As a result, I wasn't fully aware of the direction we were heading but I don't recall passing out or waking up. After I got home I hopped into the shower and when I washed my butt with water I realised there was pain. I didn't think of it at that time but I conjured the idea that I could have been raped overthinking the events. Do I have a mental illness or something along the lines of that? I am quite worried to say the least.