Every so often, I get what starts as a pimple. And its just 1 bump that's just like a pimple. Happens randomly. It pops like a pimple. But it comes back in the same exact place every time... Just one. And Idk what it is. It doesn't itch or bother me(mentally it does) but i wanna know what it is... Or what it could be! When I pop it it looks like a blister.