BACHELOR OF AYURVEDIC MEDICINE AND SURGERY(B.A.M.S)., MASTERS IN HEALTHCARE SERVICES
Welcome to icliniq.com.
I just read your query. See the pain in left side of abdomen and lump in the anal area has nothing to do with your previous anal surgery. Left sided abdominal pain may have many causes like minor causes as gas or acidity or some major issues too like kidney stones, etc. So I advise you to visit a nearby reputed surgeon so that he can examine you properly and rule out the exact problem. Once the proper cause is ruled out, take treatment accordingly. Also, he will examine your anal lump.
For more information consult an ayurveda specialist online --> https://www.icliniq.com/ask-a-doctor-online/ayurveda-specialist