after fissure surgery is common in about 15%. Unfoetunately u are in that bracket. Clinically you have now developed a fistula in-- ano & need to get Fistulotomy
surgery to cure it. Just incision & drainage
of pus is not the answer.
Visit a good colorecta surgeon-pprroctologist to geyour problems sorted out once & for all.
Tak carWis yo goo health