I wasn't "new normal" until 4 months out. I know you're not that far. So take it easy on the irritating foods!
Nap and others
Food intolerances come in all different sorts and can cause all sorts of interesting side effects. Those of us with GERD quite often have "trigger foods" and suffer from dizziness, migranes, tachycardia, esophageal spasms. Often esophageal spasms trigger other events like tachycardia or arrhythmias. It's even got it's own label: esophageal-cardio reflex. (not reflux) A lot of the triggers act through the vagus nerve which connects lots of organs, including stomach and heart.
The best way to figure out if you have food intolerances is to keep a food log. Your GI doc is unlikely to think of this, although an allergist might. I went to two allergists and the second said she sees this all the time, and she calls it allergy, not just intolerance.
After you have a bunch of foods on your list of culprits, you have to find out what part of the food is the real offender. This is done by doing a food challenge. I've posted this and you can search my descriptions on the forum. One of my allergies was not the waffle, it was the maple syrup. Get the picture? When I had my list all in order I googled around and found all my foods had sulfite in common.
I'm not saying everyone has my specific allergy! This is merely a cheap and easy way to figure out what your triggers are. Nap, you seem to be on the track of yours already. BTW barbecue sauce and most condiments contain sulfite. It's in the vinegar, brown sugar, bottled lemon juice, beet (cheap) sugar.
Interestingly, my sulfite allergy has toned down dramatically since my fundoplication and getting off PPIs. I suspect that having normal acid in my stomach for the first time in 25 years makes some chemical changes to the foods that I previously did not tolerate at all. I'm still afraid of eating garlic though!