i'd recommend seeing your physician since pain of this type can be indicative of many different organ issues including but not limited to stomach liver and (your non-existent) gallbladder. as a fellow ibs sufferer i sympathize--if this feels different than ibs pain it probably is. if the urination is frequent or painful (or both) and the back pain persists this could be a uti that's got a foothold in your right kidney and could be developing into a nephritis which is nothing to play around about. drink plenty of water and book yourself in to see a doctor.
pain upper right side abdom and back w naus freq urina no vom no fever no gallbladder. on ibs pain meds daily. appendix?