It looks like you have plenty of good answers already from these replies. If you have low weight inexplicably or have lost weight then it is quite likely you are actually type 1. Get a specialist referral and also perhaps get advice from a dietician in conjunction.
I have a friend in Australia whose son (in his early 30s) and was losing weight while eating like a horse not knowing what his problem was. The GP he was seeing at the time negligently failed to spot an abnormal super high random blood GC in an exploratory blood pathology test. Fortunately he was taken to hospital, quickly diagnosed and stabilised. You must avoid developing Ketoacidosis with constant high BGC levels as it can be life threatening.