I guess I should cantact a Dr.....,Last night, 4 hours after going to bed.I awoke with extreme(bend me over)pain in my lower right side. I was sweating ,doubled over ,breathing fast. Pain radiated to center of my chest. I had a bowel movement! Pain continued.Took maalox,aspirin(thought I might be having a heartattack) and felt that I nedded to move.Walked around with pain for about an hour. Almost went to ER, but was embarrassed to show my belly,I know how stupid that sounds. and I also had gas.This am. ,I am fine.Had a normal bowel movement.No tenderness.What was it?? I have been doing atkins for 3 weeks-could that have contributed?/ Also ate several of his snacks that have malitol and sucralose.Could this have contributed??Should I see Gastroenterologist? Would gallbladder problem have gone away completely the next day? thanks..sorry so wordy!!