Unable to pass gas from anus area.

I underwent Fissurectomy, Hemorrhoidectomy, Sphincterotomy, High-end Fistulectomy, and I&D of a perianal abscess on October 28 last year. For the past 6 months, during my recovery, I’ve been experiencing a sensation that gas is not passing sufficiently through my rectum, which causes significant discomfort.   1.My endoscopy and colonoscopy results are normal, and I have tried itopride,acotiode,cintriapride and various drugs prescribed from leading gastroenterologist in Kolkata including Dr Ashokananda Konar, Dr U.C. Ghosal Sir. 2. Recently I have found type 3 dyssynergia with abnormal balloon test in anorectal manometry 3. I have been hearing growling sound from stomach and feeling gas all time even I eat or not left lower abdomen quardex.4. I have the cyst in right kidney. Urologist has told that there is no problem since it's not increasing much. Will it be considered as a problem and I am little bit desparate and all the test are normal. want to find out the root cause?