Please can you tell me why i have a healthy diet, no family history of high blood sugar levels, have been told i could turn diabetic ? is it bad luck?

You could say so: Hi. Just to give the opposite point of view, I went thru college, MD/PhD, residency, fellowship, and faculty with type 1 diabetes, and I wouldn't trade my life with a nondiabetic. You could easily have later onset type 1 diabetes. You could check type 1 autoantibodies (4 main ones). If they're positive, you've got your diagnosis. Type 1 comes on more gradually in older age than in kids. Good luck!