Two strange bumps on head of penis with smaller bumps below head
Hello, I came back from vacation (about 2 months ago) down south and had sexual intercourse with a few different women (unprotected). I came back home worried so I did not waste any time to get checked by a doctor. He took a blood test and swabs. And all the tests came back negative. I had sex with my partner a couple weeks after that (protected). Just recently had sexual intercourse again, with another partner (unprotected). I know foolish of me, and trust me I'm definitely regretting all the unprotected activity! Now, I do not believe I have an STI because none of the symptoms seem to fit well enough, HOWEVER I am still very worried just in case it is. I have posted two pictures to help pinpoint what this may be. (Rash?) The two bumps on the head of the penis are red, but sometimes (if not touched for a day or two) they start to form like a whiteish coat on them which can be easily rubbed off. The other small bumps below the shaft seem normal to me since they appeared before and I believe it was just a small rash since it disappeared a few days later.
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Your help is appreciated more than ever!
-platy