Chronic Non specific proctitis. Pain!

Hi , since march I have been facing rectal bleeding with diarrhoea and mucosa. So the doctor I consulted suggested sigmoidoscopy , from which he concluded ulcerative colitis and gave me the following medicines: mesacol 2.4g daily, Omnacortil, Vibac, pantop 40. After sometime all my symptoms were gone, so I stopped using omnacortil and continued with other medicines. But after 1-2 weeks of not using omnacortil, my symptoms again came were not gone until I started using omnacortil again. So I was on and off on Omnacortil until December, when I had my colonoscopy with biopsy done. In colonoscopy, everything was normal except for minor rectal erosion, and in biopsy it concluded active chronic, nonspecific proctitis. So the doctor told me continue with the following medicines: mesacol 2.4g, Actapro, Colospa -x and Deflon 500 but even using all the medicines my symptoms are not going away. I am going 3-4 times washroom and my stool is not solid with mucosa and blood and mild abdomen pain