two years ago I had a small painless sore appear at the base of my penis where i shaved and the same night had sex with a girl whos sexual status is unknown.The sore appeared 2 weeks later and lasted 6 days I thought it must be an std but after having two blood tests and two swab tests I had negative results for herpes. I couldnt explain it and neither could my doctors. I assumed it must have just been a fluke but i read that there are a lot of false negatives so i had 5 more blood tests over a year and a half period. All of the test were negative I was also tested for chylimidiya, ghonnorea, syphilis HIV and Hepatitis B they all came back negative as well. A year passed then one day a new almost completely painless sore reappeared right at the hair follicle on my penis and i went to my family doctor who gave me a prescription for a cream to use on impetigo and it didnt seem to work. So i went to a dermatologist who tested me for herpes as well and that test was negative. The dermatologist said to return when I had a new sore appeared so he could swab it and that he couldn't identify it either. I just want a diagnosis so i can get on with my life. If i dont have an std then great if i do then I will handle it and move on with my life and manage it. This is destroying my self-esteem to the point of suicidal behavior. what else could this be if its not herpes?