I have been having random stomach pains in the middle of my upper left side stomach its a deep stomach cramp. It can t be my appendix cause I had them Removed years ago, and I have been having a bowl movement regularly. It mostly does it during the night when I try to lay on my side, I have to sleep on my back cause it hurts to move in any direction. It doesn t do it all the time its just random. Sometimes its not a bad pain but sometimes its severe pain.