I'm new to the site. I've been battling mold illness from my apartment for over a year now and still trying to find treatment to help. I have that extreme bloating like you as well...it's horrible not to mention painful lol and I know exactly what you are talking about!! I used to be in competitive woman's soccer and did a couple races before I got really sick and have not been able to run since. Are your nasal passages closed up? Have you heard of anything/tips for that? I haven't been able to breathe through my nose for over a year. :(
For the bloating - not sure if you tried this but this has helped me a lot! Whenever I get that balloon swelling as you call it (good description by the way) I dump 1 cup of pure Epsom Salts ( I like the ginger scent or lavender) and one cup of baking soda in a hot tub and soak for a half hour. Then I drink cold water or have a cold cloth for my head. I find a good amount of relief from that so hope it helps.