I love apples, and I don't give a shit if they're toxic. I buy them organic mostly.
Don't eat fermented food or take Threelac if you've eaten poorly (ice cream). Let your body rid itself of that first, and then reintroduce it. I'm sure that's what's causing your gas.
Funny story for you! I'm in NYC, and a few days ago, I had a high fat day. My breakfast was pretty high fat, even though I had some starch in it. It was bacon, and tuna/avocado/sweet potato hash. I felt like hell after. Later I bought an almond milk/banana/almond butter smoothie, and some 'bar' that didn't sound like it was too bad. I felt worse after. Belched the rest of the evening, and gastritis was in full swing again.
More proof to me that high fat fails for me. I *have* to eat less fat, and more starch otherwise it all goes to shit. Pun not intended