Expert Q & A Answers About red dots penis

Are these red dots on my penis genital herpes?

I’m in college and I just started having sex with my girlfriend. My girlfriend is clean (and my other partners were either virgins or had STD tests). But after we have sex, I get red dots around the base of my penis. The dots disappear after a few days as long as we don’t have sex. At first I thought they were the result of a tight condom (often after sex I have a red ring around the base of my penis), but then a sore opened up where the red dot was. Could this be a sign of herpes? Is it possible to get herpes without having intercourse?