The doctor is right you are at greater risk of getting hiv when you have another std. This is because you could have open lesions, or sores which are in closer contact with your blood stream, which the virus can enter. However, that isnt something you have to worry about because you didnt have the std the last time you had unprotected sex.
What you need to think about is that this guy you were with could just as easily had hiv, let alone chlamydia. You did the right thing in getting tested to know your status. However it may be a bit to early to tell if you have the virus or not, as it takes roughly 13 weeks for antibodies to show. I would get another test in a couple months just to be sure. As for the red bumps, they are most likely from an unrelated cause, as it is too early to start showing symptoms of the virus. The diarrhea is probably from anxiety. Hope this helps.

No..My last time unprotected was when I caught the chlamydia..Which was june 27...I havent done anything since..I kinda new somethng was wrong.....Trust me im totally freaked out...I want nothing to do with se* at all..Im soo fustrated and stuff...I hope I dont have this virus..Is not like I slept with half of the world...Only with 2 guys and the second one was the mistake..Im sooo stressed..I dont even want to g and get the results..Of my pap..If they say chlamydia is still there..Im going to go crazy..I havent had enough sleep for a whole month..Just thinking it may leave me sterile..Im sooo deppressed..