3 months ago i had anal fissure and mucus started to appear in my stool. now still sometimes i had pain/burning after bowel movement and sometimes i see a lot mucus and sometimes it completely disappears. stool tests are ok. what should i do now?

You should see a gastroenterologist-called a GI doctor. There could be many reasons for your symptoms. You may have inflammatory bowel disease, like Crohn’s Disease or ulcerative colitis. The treatment would depend on the diagnosis. You may need a colonoscopy-a lighted tube with a camera is inserted into the rectum while you are asleep. So, see a GI doctor ASAP! Hope you feel better real soon!