You will not get HIV from protected sex. The only risks for HIV are unprotected vaginal or anal intercourse or sharing of IV drug needles. As to other STD's, protected sex also creates a barrier. This doesn't sound like an HIV. Yes, it could be from sweat and heat. Your doctor would have tested you if visually it looked like any form of STD. What about hitting an STD clinic for routine testing? I think everyone who has frequented csw's should do that at some point even though I'm pretty certain you don't have an std. You can ask about something called Molluscum Contagiousum which produces little bumps. I wouldn't pick yours though as that is how things get infected. You can always see a dermatologist and you don't have to say specifically what you did but just that let the know you had protected sex with some partners you didn't know who probably weren't good choices. They can tell you if it is Moluscum or not.