Had similar issue few years ago. Tried antibiotics by clinic but didn't work. Finally was referred to a surgeon in hospital and was diagnosed with fistula. Had surgery under general anesthesia done but the surgeon say cannot stich the wound but have to let it heal from inside out. Otherwise the abscess can happen again. Took a month to recover. Was circumcised as well at the same time. Luckily now fully recovered already. For you, I think you better check with a surgeon.