hi. i had unprotected oral sex and protected vaginal sex with several prostitutes in a massage parlor who according to them get tested twice a week. About 8x i did this for a span of 3 months. also, i masturbate around 2x a day.
a few few weeks ago the head of my penis was a bit sore. so i cleansed it and put alcohol (ouch). then the next few days. i notice a change in pigmentation in the head of my penis. just only a portion of my head. i clean it for a week and put some ointment for bruise. now its gone and dead skin is falling off. however, i noticed that a small (1/8 cm vertical line) change in pigmentation again on the head of my penis. its worrying me so much.
there are no sti symptoms i see (greenish discharge, burning sensation when urinating, no itchiness, constant peeing).
i did 3 masturbations during the period of pigmentation change (its been 2 weeks since then), to check if there's nothing wrong with me.
is this normal?