Ice Cold? Sounds like something internal is going on. Hope the CT comes out OK. They won't be able to see anythng without contrast, so I hope your doc ordered that. I had some idiot do a CT on my gut without it way before I thought seriously about WLS. Had to repeat because I was not given contrast.
Devrom is an internal deodorant. It takes the stink out of flatulence (commonly known as farts), but really doesn't offer much in the way of relief from bloating.
I used to take a huge dose of Gas-X when I had this problem early out, but now, my gut is more motile, and if I get a gas attack, I just let 'em fly.. usually in open air, or if I'm at home with plenty of odor neutralizing room spray (Found a great one at Walmart next to the candles...fragrance is Garden Rain) Febreeze has a dual scented plug in oil fragrancer that works well in keeping your home from smelling like an outhouse. I use Devrom as insurance that I don't offend at public functions if one of those mustard gas farts "slips".
I was also told it's not good to take them everyday. I order the capsules straight from the manufacturer. Once I found them and tried them, they seemed to work way better for me than the chewables!
The antibiotic is likely killing off bacterial overgrowth in your gut, which can happen even to normies. That's why some people get diarrhea with antibiotics, because it kills off both good and bad bacteria in the gut. That's why eating yogurt after a course of antibiotics is usually a good idea. It puts back the good bacteria that the antibiotic killed off.
That's one reason Flagyl works for DSer's with bowel issues. It's an antibiotic, and it brings the intestinal flora back to normal by killing off bacterial overgrowth, if there is any.