I had sex with a girl not 2 long ago and the next day I notice my penis had lots of dry patches on it. Then about 3 days later that was gone and I had 4 bumps near my penis head I don't know wats happening. I got checked in April 4 stds but they said I didn't have anything. She was 1st girl I had sex with since can it be herpes or another std can you help me its driving me insane