Oh my goodness. I know how you feel! It had only been a year though! Not 11! But there is a better chance of you knowing from 11 years ago instead of 1. I had been with someone for a year and didn't know that he had been with 9 other women until after (needless to say he LIED) and I had unprotected sex with him and about 8 months down the road I saw him and he looked so unhealthy. My friends had seen him as well and they said he almost looked as if he was dieing from Aids or something. He had lost a lot of weight and he was Skinny before, and he just looked unhealthy. So when I saw him i just about died! I was like OMG I need to see if there is something that shows up on a test! Well it came back neg. but like you said it could be years for it to be found in your system! Good Luck!!!