I've been getting some annoying gas while low-carbing it also. It's seems to be in the large intestine. I have IBS and I swear it was under control until I got off of the PPIs. Now I've had gas in varying degrees almost every day. When it's really bad (after eating too many veggies), the GERD starts up a little. I just bought some Beano yesterday and gave it a try with dinner and it worked amazingly well. I wonder if the PPIs or just age has caused my digestive system to be all funky? I feel like it's lacking something to digest my food.
I could try more grains and that would probably help the lower intestinal gas, but then I would have more reflux.