I recently got a rash on my chest, below my nipple. It's a series of small raised red bumps (very close together) - maybe 12 -15. It's been a little over a week and they look to be fading a bit now. They're not painful, but can itch (although not all the time). I'm sexually active with multiple partners in the past few months, but always wear protection. I've done some research and keep seeing all these references to acute HIV and now I'm really nervous, especially considering during this outbreak, I got a sore throat that lasted about two days (now gone).
I'm really anxious now. In some ways I feel very confident because I haven't had unprotected sex. But I don't know what other explanation this rash could be. So I'm asking, what else could cause an "out of the blue" skin rash of this type?