for the past 6 months i've had a reccuring rash on the glans of my penis. it happens sometime out of nowhere and a lot of the time the next day after having sex. it doesn't itch and it doesn't burn, but it is slightly tender. as of late there's been a bit of a dull ache, but that may just be in my head. i've used lotrimin a lot and it hasn't done much if anything at all, so im almost sure its not fungal. it hasn't ever turned into a blister or scabbed over, it just goes away. however, it does occur on the same exact spot everytime. my girlfriend tested positive for hpv, though ive never shown any symptoms before this and we've been having sex for a few years. should i be worried about herpes?