There is a new vitamin out now too that is probiotic too. I can't remember the name. I have heard that IBS causing a lot of the same symptoms. Also that antiboitics will get rid of the bacteria overgrowth (which also is said to cause a swollen/bloated tummy). Hugs to you and hope you feel better soon!
OH, I had numerous people (doctors, etc) tell me that you can't always trust everything you read online (even on some of the best sites)...so please, don't worry yourself sick!