Hello, I have been having a pain in my left side for a few months and after blood work my doctor belives it's ibs. I have also been to a gi and they belive the same thing. More blood work has been ordered as a percaution from the gi. THe gi have given me samples of align lst thursday. I have been more gassy then usual however i have had less diarreha. Well this morning i had a dark stool which was thick. Shortly ever i had to go to the bathroom 4 times with diarhea. SHould I be concerned? My left side, where i had the pain from the get goes feels like a tired type of pain.