Does this sound more like a boil or some sort of skin cancer?

I know it sounds hard to mix these up, but I'm still confused. I've had this reddish brown bump on my torso for about 2 months. It swelled up and I popped it. Lots of puss came out and died down. Recently It started to get flaky and red and lately it's been oozing out blood. I showed my dad and he said it was boil because he had one like that. The only thing is it's not warm like a boil and haven't had a fever or any of the side effects that come with a boil. It also hasn't spread like cancer is supposed to and doesn't wiggle like a tumor. I recently started putting antibiotics on it and I'm trying to see how that goes, but so far what does this sound like?