I was put on insulin because metformin upset my stomach. Some time later I had constant burning in stomuch. Had endoscopy ,colonoscopy and ct scan told nothing found And bloods were normal for 63 year old male. It was decided the insulin could be causing burning and I came off it. Burning abruptly stopped but then I got chest infection and went on strong anti biotite. Since then my stomach is all over the place and certain foods I enjoyed now make me I'll. I have constant diariahh and constipation and pains in my belly and unable to bring up wind which is most uncomfortable doc has given me meverberine which seems to help a little and ranatadine which gives me headaches and am waiting to see diabetic specialist on 7april this year for my inherited late onset type 2 diabetes can anyone help or relate to this .