Suggest Treatment For Cystic Acne While Having PCOS

Because of my PCOS, I get bad cystic acne frequently. I can t afford to see a dermetologist regularly, so I try hard to take care of my acne by keeping my face clean with gentle unscented soap and moisturize. When the cystic acne is bad, I ll use a hot rag compress soaked in diluted tea tree oil and water to try to coax the spot to a head. I never pick my pimples- its usually far too painful.This last week a pretty bad spot appeared on my cheek. It hasn t been responding to the hot compress and seemed to be getting bigger. The redness was almost golf ball sized. Tonight I decided it was looking pretty bad and was too painful to deal with, so I swabbed the area with an alcohol swab and carefully lanced it with a sterile needle that I purchased today from a local tattoo parlor. The cyst exploded in a mess of pus. Quite a lot of pus came out and the zit made this awful squealing gurgling noise when I applied light pressure, almost as if air was bubbling up from under the skin. I m rather unnerved by the brown chunky pus that came out of the zit. I ve never seen a pimple with pus like that. Is it infected? Is it staph or mrsa? Do I need to go to a doctor? How do I prevent the cyst from becoming more infected or from scarring?