Can someone help me?

3 months ago, i went to the doc to get a bump in my rectum checked out, he said it wasnt a hemmoriod though, and he said it was a pollyp or something. Then, I went to a specialist, he gave me a colonoscopy, and he said it was an fissure, and the bump (and the other 2) were just caused by the fissure. So he gave me a medicine to get rid of the fissure, and that was 2 months ago, and it is still there after 12 pills, how many more will I need for it to go away? My mom keeps forgetting to get it refilled