re diabetic you need to obtain a home test kit - glucose meter, test strips, and lancets - and test, test, test until you know how to control your glucose levels. Prandial means
before a
meal, postprandial 2-4 hours after a
meal. Is there a reason your doctor did not provide with one?
Go here to learn about diabetes and how to control it
http://www.diabetes.org/
"3- mostly junk food, but not allways I do eat home made cook."
And you're wondering what's wrong with you?