I'm not sure whether to go to the doctor about this or whether it's completely normal. There is a lot of poo information on this post so don't read on if you're eating!
Since being diagnosed with coeliac disease five years ago I've had varying poos. By which I mean sometimes I'll do a normal sausage type poo but other times I'll go to the toilet and end up sitting there for about 20 mins doing lots of quite loose poos. The feeling in my stomach is as though I have diarrhoea but the poo isn't as runny as diarrhoea. So I'll do one poo, get ready to stand up and then get the urge to do another, and this carries on for up to 20 mins and the toilet is completely full up with poo.
This type of poo is happening probably every two/three days and often if I've eaten a lot the night before. I definitely haven't eaten any gluten.