<s>[INST] Hi.  I've been experiencing watery diarrhea for the past week, and I have pain in my left abdomen which sometimes radiates to my back.  I called my doctor, who recommended the BRAT diet, and that hasn't helped.  The abdomen pain just started two days ago, several days into the diarrhea.  Is this related?  Doctor also ordered a stool sample, but by the time the lab was opened after the holidays, my bowel movements returned to soft stool.  I still have the pain in my lower left front side, and sometimes my back on the left side.  I've started to eat some normal foods again, but then the watery diarrhea returned.  Any advice or thoughts?  Now it's the weekend and the office is closed, of course!  Thank you. [/INST] Hi Welcome to HCM,     This could be an intestinal flu, since have prolonged diarrhea please be treated with OTC meds by consulting your doctor. Drink plenty of water.  Thanks for writing to us. </s>