Bad diet soda drinker ( 12-14 qday ) that's all i drink. but when i do drink water in a.m. or p.m. i get diarrhea almost bam! why? i want to rid soda!

Will be a transition: I suspect that your are drinking so much diet soda that your bowel has become immune to the affects of artificial sweeteners (which are the usual culprits CAUSING diarrhea) so that when the bowel is presented with simple water, it reacts. Good for you that you want to quit this! set up a transition plan: For 3 days, substitute water for every 4th soda; then next 3 days substitute every 3rd, etc.