I do t know what's going on... I've had stomach pain on off for about 3 weeks my poop has been of either a hard time going or diarriah little pellets or a lot last night woke up I middle of the night in terrile pain.,.. I've had a blood test and abdominal sonogram all normal..... Has anyone had this some days it hurts so bad others I'm fine and I poop fine..,. What gives ????