I’ve been mentally destroyed the last 4-5 weeks, I need help

So i had sex and from that i developed what i think is a friction burn. I have been tested twice for every STD/STI and the results have negative, well below ranges. I am wondering if it is molluscum contagiosum or something else. It does not cause pain but its just an inflammed feeling with a little bit of a cooling feeling at times. i have had it for 5 weeks and i dont feel its improving. I am already dealing with school and this is just adding to my already stressful life. Please help me. thank you

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hi bean
your skin looks very dry
how and what are you washing with?