Glucose average and wether i am diabetic and should control my eating.?

I use a onetouch ultra 2. I am 18 5 7 and 230 pounds. When i wake up and test it it averages around 75-95 mg/dl. When i eat a good size bowl of rice and wait 2 hours. It jumps to 120. I want to know if this is normal level for me or if im diabetic or have problems and should control my eating.