Can anyone help me figure out what's wrong with my penis?

Hello, I began getting redness on my penis head and later strange injuries after sexual activity for about 2 months now. Used yeast medication (diflucan pill) and (miconazole nitrate vaginal cream usp 4%)for a week or so as it looked like a yeast infection but it didn't seem to go away. After that didn't work I took Antibiotics (Amoxicillin 500mg) for 7 days and used a triple Antibiotic tropically in-case it was bacterial infection. Thirdly I tried using Cortizone in case it was a dermal issue like eczema. Took a full std blood/urine test 4 weeks ago and was negative in everything but herpes which came out equivalent. I don't have insurance and the test was expensive so not sure what to do now. When it's dry the bumps flatten out and when it has moisture they raise up and turn white. Can anyone tell me what I can try to get rid of this? It does not itch, burn, or hurt and I don't have any other symptoms.

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