hello, I am 17 and have been sexually active with two girls, one i had sex with and the other that i have only fingered. the first girl, the both of us were virgins, the other girl, she wasnt. i have been researching a lot on herpes, doesnt seem like I have it, and does not seem like she does, but my penis shaft was really itchy for a few days. it has been really itchy before, even before the second girl. however, this time, a cluster of blister like sores formed on the tip of my head on the right portion. they were not painful, nor were they itchy or anything. they also only lasted about 2-4 days and are clearing up now. its been about a week in all from start to finish. im really worried, but i have no symptoms of genital herpes.