Concern about Bifido

I read on this discussion that bifido is good for SIBO so I ordered. Very expensive. It's on its way and then I read that infantis, an ingredient in bifido can increase methane. I have SIBO methane so now I'm very worried. I just finished my 2nd round of antibiotics. Still can't gain a pound and now I'm back on a ton of supplements and herbal concoctions. Should I take the bifido? I think my SIBO score might have gone down. It was 77, then 54 after herbal stuff and now I'm hoping it's a lot less so I dint want to do anything that will make it go back up. I've added florastor and berberine. Any ideas out there?