Euphoria - does your stomach look pregnant when it flares up? Mine does - i also get the gassy burpy things you're talking about and other kinds of gas too

It's horrible. I also get crazy waves of nausea after the bad attack of heartburn. It's like i can feel whatever it is moving around in my gut.

AP and S_L have covered most of what i did - my stomach is playing up again today because i blew out on the weekend.
I would definitely simplify your diet for a couple of weeks - plain quinoa, steamed veges (NOT raw - steamed can retain the goodness but are easier for your body to digest), I was able to have small amounts of natural pot-set yoghurt. For me, rice is boating, but quinoa is fine. Cut out all alcohol, sugar, tinned food, dairy, gluten and wheat, and meat (for 1 week) - you can introduce chicken in the second week.
My breakfast consists of scrambled egg with vegetables - I then aim to have protein of some kind with every meal. Try having pure protein for breakfast and see how you go.
Also consider how you eat hon - are you a fast eater? do you chew your food to a paste? The first step to digestion is our mouth - chewing our food to a paste enables the rest of our body to digest better. As my nutritionist pointed out, our stomach doesn't have teeth

I found that chewing my food and slooowing down my meals has been a huge help.
As an aside, I think it's a good idea to give the pre-mix oatmeal a miss - i loved the honey and cinnamon one myself but my stomach blows up like a balloon if i have it. I actually find plain porridge (oatmeal) gives me reflux too.
I'd speak to your doctor though, the bloating and gas could meant a number of things - i have exactly the same symptoms as you when i flare up, and i've been diagnosed with a flourish of candida in my gut (which has lead to GORD) - which feeds on sugars. There are specific diets to starve candida, the above ideas I mentioned are included, but the actual diet is HARDCORE. It really is eliminating a heap of things.