Basically, I'm a 19-year-old guy and have had un-protected sex twice. The first time was about a year ago and I noticed the skin on my penis head started to peel and the tip itched. I had no signs of herpes or anything like that, just irritation and very faint small red dots around the shaft. Thought it might just be friction burn or a reaction to the condom (wore one to start with). Had un-protected sex with my girlfriend (who's a virgin) a week ago (also wore a condom to start with but the condom was really tight and hurt) and the little red dots have appeared again and it burns a little when I urinate. There's no signs of blistering, discharge etc. I do masturbate a lot, usually around twice a day so could have something to do with that? it usually happens after I wear a condom as well.
I had a Chlamydia test about three weeks ago which came back negative.
Any idea what it could be? just an allergic reaction? I will get it checked out, I just literally have no time at all what with Uni and Work. Any help would be very much appreciated, thank you!