measuring 3 weeks ahead


okay ladies I am 32 weeks pregnant I have pregnancy diabetes I don't know how to spell the first word but anyways I went to my doctor's yesterday and he measured my belly and I am 3 weeks ahead I am measuring 35 weeks now one or two weeks I can understand but three does that mean my baby is big I don't understand he won't talk to me about it he says that he I need to see a specialist my diabetes are not controlled I am still running High in the morning fasting and running high after meals I am taking insulin 12 units after meals but he does not want to prescribe me any fasting insulin I'm just confused cuz I want to know if that means I'm going to deliver early because the babies big or does that mean my baby is going to be 10 lb Plus anyone had this problem before