| Hi StoneGirl... Welcome to DF... glad you found us..! It sure sounds lie you came to the right place.
Now I am not a doctor but with an 8 hours fasting blood sugar of 155 mg/dl (should be under 100) and an A1c (3 month test) of 7.6% (should be under 5.6%)... sure sounds like Diabetes to me.
I don't really understand why your doctor is hesitating to diagnose you as a Type 2 Diabetes. You need to get a glucose monitor and start testing your own blood sugars at fasting and 2 hours after each meal. Write these down in a log book along with a record of what you ate and how you feel. I suggest an excellent book by Gretchen Becker (listed below, in my signature)
Don't panic... although D can be overwhelming at first it is something that you can learn to control. Come back here often and keep asking questions.
In terms of diet, yes watch sugar (cut back on or stop soda-pop for example) but more importantly cut back on starches like potatoes white bread, pasta, rice. Good Luck and hang in there!
__________________ ~ Frank Metabolic Syndrome Dx'd March 2003. Started MM 712 Pump April 2004. MM 722 + Contour Link April 2008. "...type 2 diabetes is associated with obesity... [so] most people assume that the excess weight causes the diabetes. But... it's possible that diabetes causes obesity" "One of the causes of your diabetes is a poor choice of ancestors." - Gretchen Becker - The First Year: Type 2 Diabetes: An Essential Guide for the Newly Diagnosed | 
