Semi Loose stool with burning sensation across the stomach



I have had this burning sensation across the stomach for a month now. Also stool is semi loose not
watery (say 3 times a day). GI had me do the ultra sound and stool test and everything is normal as
far as he can tell. SO he started me on protonix which I have taken for 5 days now and seem to fell
little better. Not sure how long to continue on protonix?

Also GI said the next step would be colonoscopy ?? Is that the case or can I still have some other
tests, xray etc before I dive into colonoscopy part? Thxs