Stomach Pains

It's been a very long time since I have posted here but I need help. I am 7 yrs. post-op and having very severe pains in my stomach. I just went to my gastointestinal physician and I have to go back on a post-op liquid diet. I don't have a copy of that diet but do remember drinking a lot of carnation intant breakfast. Is there anything else I can have? Also other test are being done in which i won't have results for a few weeks. I have been told to take carafate in which I have taken religiously and to take Previcid. (Been taking Prilocsec to no avail). It's no fun having this pain and it's starting to effect my work. Also, it's no fun when you have to take codiene for pain. ( Can't take Tylenol, allergy). I am looking for answers and relief. Please Help!!!!!! Thank You