After a few years of test and misdiagnosis I am left with IBS. I am negative for Celiac. So after having moderate abdominal pain and bloat most every single day I decided to try making mac and cheese with gluten free noodles. I was thinking of doing the gluten free diet even though I am negative for Celiac to see if that might help. I do not have issues with dairy. Anyways all went ok until before going to bed I was in increasing pain. It woke me up at night a few times and so went the usual diarrhea. Except not very much was coming out after the 3rd bm that night. Then in the morning it was nothing but red puss and blood red small stool but no out right blood. That happened all day long up until 7 pm the next day. Then the stool was back to normal. I have had much more severe abdominal pain also. I have had sharp abdominal pain but never has lasted all day long like this. I have had plenty of times when abdominal pain has woke up at night and then I keep reading that IBS does not wake people up. Anyways has anyone had red stool? I do have puss occasionally too but never had blood red stool so frequently before.