Hello, I went through the details you shared. From your MRI report it looks like there is still a fistulous tract present in the perianal region, though the inflammation has reduced compared to the previous scan.
Fistula-in-ano is a chronic condition, and unfortunately, medicines or leech therapy alone cannot usually cure it completely. They may give some temporary relief, but recurrence is very common if the underlying fistula tract is not treated.
The standard and most reliable treatment for fistula is surgery. The choice depends on the exact anatomy of the tract, your symptoms, and your surgeon’s judgment.
Since your MRI also shows endometrial thickening with cystic changes, I would strongly suggest you also consult a gynecologist for that part separately.
Next Steps
Please discuss once more with a colorectal surgeon.
If you wish to try Ayurveda, you may consider it for supportive care, but do not delay proper surgical management too long, as repeated abscess formation can make things worse.