Spider bite? Boil? Helppppp

Hello everyone. I have developed this bump on my butt and i have no idea what it is. Not sure if it’s a spider bite or a boil or a different

bite. It is warm to touch and i did pop it a little i know that’s bad but this was before i looked it up and found out it could be a spider bite or boil :/ It also hurts , even to just sit on the bed.