I Began Having An Explosive Watery Diarrhea 5 Days Ago.

i began having an explosive watery diarrhea 5 days ago. i have not had diarrhea in 50 years. i am a youngish 76 year old with a history of atrial fib. this is messing up my potassium and doc put me on extra KCL each day. also had to go to e.r. for i.v.s and kcl once. i have absolutely NO cramping. my colon just feels full and i go. sometimes when i eat or drink it is stimulted and shortly after i have it. first 3 1/2 days did this over and over again. last day and a half less often. urine is staying clear yellow and in e.r. was clear of any infection in ur. tract. stool samples to lab pending results.