Metformin & bad diarrhea??

Anyone on Metformin get bad diarrhea & stomach ache?? I only take 500mg a day at dinner that's extended release but it's tearing up my stomach!!!!  To the point of misery.  I've only been on it 3 days & it's just been awful!!  I took Imodium tonight.  Just wondered if anyone had this issue & does it go away?!  Thanks in advance.  😩