Suggest Remedy For Infected Boil On The Chest

Hello'
I had a small bump on my chest which looked like a zit. I didn't think anything of it so I popped it. Puss fluid came out so I cleaned it up with some peroxide and left it alone. The next day it had a hard scab and has so for a few days but the scab w as like a crater. It's been a few days I've pulled the scab off and squeezed it again, on puss and fluid came out. Now it has the same hard crater scab. What do I do?