Anxiety and skin problems or HIV???

Okay so I have not been very smart in recent months I had unprotected sex with a girl of unknown status. I have read through every forum in med help and half the forums in here. My mind and my eyes can barely see as i am writing this due to the fact that my OCD just will not ket go of information pertaining to my issue. I just need to know, it killing me literally. IF THERE IS ANYONE OUT THERE READING THIS GO TO THE STORE AND BUY CONDOMS NOW!!!!TRUST ME ITS NOT WORTH THE STRAIN, I WOULD NOT WISH WHAT I HAVE BEEN GOING THROUGH ON MY WORST ENEMY.

So it is obvious that I have incredible anxiety, yes that is a fact... So my question is can it effect your skin? Like itchy bumps that appear like mosquito bites?? I have heard that it can, but I want to hear it from a person on here that it has maybe happened to. When i say anxiety i do not say it lightly either this is anxiety from the depths of hell flowing through my viens and throughout my body, its the worst feeling ever... Words do not come close to the level I have been on recently, it has made me quit smoking both weed and cigs I hardly eat its like a constant worry state of being... And I always think about the worst case scnario and its destined to be that way... What does anyone recommend? It may be shrink time for me before I just do myself...