Write two sentences using at least three abbreviations to describe a scenario that you might encounter related to the digestive system.

Jack felt very depressed when the result of his GBS was interpreted by his doctor. About four weeks ago, he noticed that anytime he eats, he usually feel a very sharp pain in his GI track together with IBS.

The full forms of the abbreviations used in the sentences above are as follows:

GBS; Gall Bladder Series [X ray studies]

GI: GastroIntestinal

IBS: Irritable Bowel Syndrome.