Hello Dear and thanks for writing in
As per your query, it seem that you are suffering from Gastroenteritis
i.e. inflammation of the upper GI track. For pain you can take antispasmodic drugs with PPI inhibitors and H2 inhibitors. But if you pain still persist than you may need a course of antibiotic.
Take plenty of water and light food which is easily digestible. As per Pankreflat is concern please consult your doctor before taking any medication.
Hope this will help you.