On Dec 31 I was having anal sex with a girl and the condom broke. I was inside of her for 5-10 minutes when I pulled out. I immediately washed my penis. Since then occasionally my penis would itch and I don't have a rash, no swollen lymph nodes, no fever, no headache, no fatigue. Daily i experience a tingling feeling on my pubic hairs and no rash. The first couple of days i had a sensation when i would urinate but it wasn't burning. My urination is normal but sometimes i feel discomfort on my penis. I don't have any discharges on my penis, soars, crust or any of the other symptoms I have read about. I did notice my penis looks larger then normal and can easily get an erection. I don't know if its because of a possible std or the girl i'm dating. From what i read it seems like I have jock itch and I plan to cut my pubic hairs and apply an anit-fungi cream. Do you think I have an STD?