red pimples under pubic hair

Saturday night I had protected sex (no oral either), which was rather rough and she was pricky down there and the next day I noticed my pubic area felt rather irritated, so I shaved a good amount of my pubic hair, there I noticed red pimples under the hair folicles, only one pimple has somewhat of a whitehead. I was wondering if anyone knew what could be the reasoning for this, there's no blood or puss, no itching, so I'm hoping to rule out herpes and crabs, there's also nothing on my penis whatsoever. I exercise quite often so maybe its just from being damp in the area. Anything to help me would be much appreciated

[complete]

Hi,Sounds like a heat rash to me.Take a couple of showers a day should be fine in a few days.Good luck.

[justquestions]

I have the same problem just in the pubic area, not on or right next to privates, same stuff.  But it only comes when it's warm outside, never in the winter.  & I do remember having it before i was even sexually active but I still get freaked out about it.  I talked to my sister and she said she has the same problem, so does one of my friends.  I think it's pretty common, they never itch and usually go away in a day or two, sometimes even a few hours.  It's just an embarrassing inconvenience. I do also exercise often and usually have them after a work out up until I take a shower.  Does anyone know of something that would just prevent them in general? Or any more advice..