about a week ago, a sort of cystic red pimple formed on the top part of my cheek, kind of below my eye. it formed from a pimple that I didn t pop. it had no head but when I touched it or acted like I was gonna squeeze it, there was pus inside. I left it alone, & I may have irritated it by pressing on it now and then cause it hurt. now it s shrinking but it s almost like a bruise. will it leave a mark even if I leave it alone? I know I m not going to pop it.