I have had diarrhea for 4 months. I just had a colonoscopy, some polyps removes. This is new. Also I just had my left thyroid removed and the isthmus. It is cancer. Ther right side will be removed later his summer. I am on metforman ,losec , atorvastatin, levothyroxine,celexa can I take an antidirreah med like Imodium?