Have you had any stress lately? You could be having an episode of irritable bowel. Its quite common and can cause bloating gas and change in stool.
I paid to see a dietician in 2012 and the blood test found i was intolerant to some weird things lol. On a scale of 1 - 3 (3 being worse). gluten came up, so did bakers yeast and brewers yeast. green beans, bananas, and a host of other things.
I did do research about gluten and it can cause inflammation so i took it out as much as i could, also i was lactose as well so try not to eat dairy i drink koko milk which is fortified with b12 and D. I know if i eat anything with stuff i am intolerant too as my tum blows up lol and i am not pleasant to be around. IF i eat bread with gluten i burn for england my legs go nuts.
I have found as i get older i become more intolerant of lots of things, even had hay fever for first time since i was born this year, sneezing my head off.
you doctor might sort you out with a blood panel i must admit i found mine quite interesting as some of the things on there I used to have tummy issues but just put it down to eating too much of a good thing lol.
but taking gluten out really helped me and i dont drink anymore as when i drank i sneezed my head off, and i felt awful. one way to go tea total ha ha. when i went gluten free the water fell out of my body and i lost weight. feel tons better for it, but then it showed i had an intolerance to it.