Pilonidal cyst draining

Hi, I'm 18 years old female. I have had back pain in the area of the pilonidal cyst for years. Four years ago, I had my cyst lanced ( by that time it erupted and the doctor said it had overhealed) Then a few months later, I had it lanced again. It never went away and the cyst started to get much larger and continuously drain. The area of the cyst was very dark and felt very hard. Sometimes it would get very bad and I would put a warm towel on it and help the pus come out. The pain was horrible and I could barely sit down. In April the area had gotten so big and hard my skin actually started to peel big pieces of dry skin. In may I went to the emergency room and it was lanced again. This helped a lot but they recommended me to a surgeon. I had the pilonidal tract removed and I was in the hospital for 3/4 days. I had stitches for 2.5 weeks. But one of the stitches popped and Part of the wound opened and had to pack the area. For about three weeks I was getting the wound packed. It closed up finally but I still had pain. Now the small area where the stitch had popped has reopened and always draining. Sometimes with blood and sometimes very thick yellow pus. Before my cyst was always very itchy. But now it doesn't itch often but sometimes can itch. During my period, the area flares up and started to ooze pus even more than usual. I have a huge scar because of tract removal that has healed up okay but a small part (where the stitch popped) still oozes pus and can become very painful. So after having it lanced three times and a surgery to have the tract and sinus removed, the pilonidal cyst had not ever healed.