Hello doc, I'm a 26 year old man, 2 days ago I went to use the restroom at my place of work and looked down and noticed a little pin print of red on the head of my penis, not near the hole, but on the crown on the right side. The night before I did masterbate without any lubricant. I had unprotected sex with a girl about 2 months ago, but I have been with her the past 2 years. And she swears to me that she is clean and has been tested recently(I know that doesn't mean much though). In those 2 days the red has gotten a tad bit bigger but still small. I don't believe it is herpes because I also have a rash on my ribcage on both sides of my body due to my dogs fleas, I believe. The area is not sore nor does it look like a blister. It also isnt scabbing up at all. The reddish area is not bumping up or swelling. The thing I'm worried about is that I have never seen anything like this on my penis. I'm freaking out, can you help me?