Hi...I am sure u r very uncomfortable....do u have normal regular BM's? This can add to this problem...in addition u mentioned yeast, did they give u DIFLUCAN to help with that with the antibiotic?
And another thing u may want to talk to ur Dr about is probiotics to help re-balance ur colon and digestive track.
Do keep a journal of what u eat to see if mayb something u feel is a safe food to eat is actually a trigger for u.
Modify lifestyle as well as diet such as elevate the head of ur bed....see the Health Pages for more tips-
http://www.medhelp.org/health_pages/list?cid=236
Lastly..make sure this is not an issue with ur Gall Bladder, many times it is overlooked and the H.Pylori is from sludge that can build up around this organ.....
I pray u get some answers so u feel better soon
"selma"