My Blood Pressure Is 108 Over 64. My Pulse Is

My blood pressure is 108 over 64. My pulse is 79. I am a 66 year old white male.

For the last few days I've felt light headed. I am diabetic and my blood super has been over 250.

Any idea as to what might be causing this.

I realize this doesn't give you much to go on, but I thought I would ask..