I'm a 64 year old male with a acquired brain injury from an accident 2 and a half years ago, also have physical disability. I have lost nearly 2 stone over last 3 months, I am constantly thirsty and need to urinate a lot, I can not hold my wee and have to go as soon as I feel the need. I have just had a blood and urine test. My blood sugar has doubledfrom 51 to 114 and have been given metformin 500 mg twice a day am I know a diabetic? Nurse said if im sick I need to go to a and e why is that?