25 days ago I recieved oral until completion from an escort. I got paranoid with feeling things on my penis and went to the doc's 3days and 5 hours later. Got a g and c pee test and put on doxy 100mg bid for 10 days. Came back 2 days later and got a syph and hiv test too. All tests are negative and I finished the doxy. Had some irritation at the pee hole but think that was from me opening it and checking for discharge 5 times a day. That got alot better. Anyways things are going good and i'm feeling back to normal for a few days.On day 23 post exposure I go on a long run. About 3miles longer than mylongest. Wellt hat nite, about 10 hours post run, I reach into my pants to scratch and snag my lefty and scrotum and do a downward tug. It HURT. I found theonly way to make the pain again was to pull down an the left. so i thought no big deal I just did that to myself. It aches all the next day about a 1/10. And today it still a 1/10. No discharge, sores, pain w/pee, swelling, fever, or swollen lymphnodes. Just this ache. Could this be STD related or is it from the trauma and self testing, running? oh and no problems w/ erection/ masturbation.