a little over a month ago, i had unprotected sex with a female who approximately 2 weeks later was diagnosed as having HSV2. i still haven't presented with any of the obvious symptoms such as bumps or warts on my penis, but i've experienced an on-again off-again burning sensation just inside of the tip of my penis. most of the time i would say it's simply irritating, though for a day or two about a week ago it did move up to what i would call painful. i went to the doctor on the second "painful" day and he ran blood tests for herpes, chlamydia and gonorrhea, all of which came back negative, and he also did a urine analysis, which came back clean. after seeing my doctor, over the holiday weekend, i pulled the tip of my penis apart and looked in (it hadn't occurred to me to do this prior for some reason) and saw what looked like might've been a cold sore type wound about 1/4 of an inch inside. i couldn't really get a very good look at it, but it appeared grayish. the area immediately around it didn't appear to be any more red than the nearby skin. i had actually assumed it had healed up and was going away because over the past weekend, it didn't bother me at all, but then suddenly today the burning sensation has come back again (to irritating level, not painful). i haven't had any sexual activity since october 30, which was when i slept with the girl that turned out to have herpes.
i realize that a blood test for herpes can come back with a false negative if done too soon. my blood test was done approximately 4 1/2 weeks after the exposure, but am i wrong in thinking that, since i had this sore (assuming it is herpes) for a full week prior to testing, wouldn't i have developed antibodies by then? also, why would the burning go away for upwards of 3 days and then return? any thoughts/suggestions are welcome and appreciated. thanks.