The breath test is usually a way to measure bacterial overgrowth in the small intestine. A sugar is drunk and then the amount of Hydrogen produced is measured.Antibiotics are the typical treatment for that, but it may take some work to find the one that will work.There are a couple of ways to do the bacterial overgrowth test, and some of them can have a high false positive result, so sometimes the test can be positive and there isn't any overgrowth present.For some people probiotics may help, but the quality of supplements varies widely. Culturelle, PB8, VSL#3, and Primal defense seem to be brands that people like. The primary thing this does is reduce the amount of gas produced from undigested by human carbohydrates.She should be retested for the overgrowth issue to see if the antibiotics worked. These symptoms can be caused by any number of things, so finding one problem may or may not fix the symptoms even if that one problem is resolved.IBS and endometriosis are both common, they can cause some of the same symptoms. In someone with both (which happens a lot because both are common) a flare up of one may increase symptoms of the other. I know of no evidence that one causes the other.K.