Hi, i'm 18 years old and the night after having sex with my girlfriend for the first time(a condom was used) i woke up with an itchy rash around my pubic area, this was about 3 days ago and since then it doesn't seem to of spread at all. but a lot of the red/pinkish spots that make up the rash have developed whiteheads which seem to be filled with puss, i have noticed this when i got up today. i do not know what to do and i am understandably very worried about this, and i don't know what to do, i have shown my girlfriend and she doesn't know what it is either and insists that she didn't have anything and its not from her, we are seeing a doctor on monday about it but i would like to know in advance if these are the symptoms of any kind of STD.