Heavy bloating and sever stomach pain.

My spouse suffering for heavy bloating and sever stomach pain. We went to corporate hospital and done most of investigation like CT Scan(cheat, Abdominal and pelvis) x-ray, endoscopy and few pathology investigation. In endoscopy doctor identified few ulcer and based on endoscopy they had started antibiotics and pain medication.After completion of course her condition went worst like increase in bloating and stomach ace and no hunger so on..We changed our doctor after 3werks as things are not going smooth..After consulting other doctor she is complaining discomfort and doctor don't have clue to treat her.. Based on last doctor we meet other gastroenterology doctor who suspecting IBS and starter medication.. When ever any medication starts she complaints sever pain and bloating (Double the amount what she had).plz suggest. Medicine: Colonaspa Veloz L Rixmin