I have had these fordyce spots on my shaft since probably around 8th or 9th grade. Right now I am 17 and I have had sex once, which was when I was 17 around march or so.

A few days ago I tried popping one of the fordyce spots (like I usually do....which I need to stop doing that...) and of course it swelled up very much and is very red. This has happened before but I'm nearly positive that I popped it in the past and it would just go back to normal. But this time it is pretty swelled up and also it is very irritating and has been very sensitive when it is rubbed against something. As of right now I am putting antibiotics in it but I was using acne medication. It's almost like a blister.. Is it inflamed or and STD or something.. I am very very worried because I don't want to have an STD at the age of 17... Thank you very much !