hello doc, i am male 24 yrs old, till date i have had only one sexual encounter 16 months ago and that was with condom , however my condom broke in between and i withdrew, and finished up orally. after this event i got myself tested for hiv and syphillis and came out negative, though it drove me crazy. till now i have nvr been into any kinda sexual activity, except i masturbate quiet often 3 or 4 times a week. now the problem is a week ago i noticed a small red bump on my penis head dont knw how it came there but it wasnt inchy or painful but was just there. after few days again after masturbation another red bump popped up at a differnt placeon the glan itself and this time i felt little irritation and pain and also my penis head turned red and irritated. plz help is it some kind of std that i may have contacted 16 months ago from my only sexual encounter till date.?