Suggest Treatment For Diarrhea, Fever And Blurred Vision

Hi I m Sara. I have taken Cymbalta for over 4 years and my fibromyalgia is worse so I started going off of it over 3 weeks ago. I m having flu symptoms and blurried vison and just feel very sick al over. some diarrhea which Pepto-Bismol seems to help. I m afraid of getting pneumonia as my mon an dad died from it. i m down to a pill every 4 days, can u offer m any advice