i was diagnosed april 2016 with type 2 and was put on 1500 metformin daily with diet advice and have successfully lost nearly 2 stone, after about 7-8 weeks i started having intense bouts of constipation/ diarrhea and trapped wind, so went back to the docs and was given the slow release metformin. been taking it for about the same time as the first one and its starting all over again. did anyone else have this and if so what did the doc do next?