Anyone have an idea what this could be?

I hooked up for the 1st time in forever like 2-3 weeks ago and since then this has appeared.

It doesn’t hurt or anything. And it’s about the size of a dime. Am I just paranoid? The only thing I’ve found that’s similar is ring worm. Any suggestions on what it could be?

I hooked up for the 1st time in forever like 2-3 weeks ago and since then this has appeared.

It doesn’t hurt or anything. And it’s about the size of a dime. Am I just paranoid? The only thing I’ve found that’s similar is ring worm. Any suggestions on what it could be?