hi, iam a 44 yr old female who is over weight, my grandmother had diabeties and now i seem to be getting a strange array of symptoms which when i searched online it said i had a high risk of diabeties , iam freezing cold in daytime even when its warm and at night i sweat a lot, i have extreme tiredness, blurred vision, my heart seems to beat an extra beat about 20 or more times a day, burning on the edge of my right foot, i have had these symptoms for quite a few weeks but i dissmissed them becaue i have an underactive thyroid and nerve damage from a spine op and i always thought the only symptom worth worry about was being thirsty and getting up at night to go to toilet, i do get up twice at night where i didn't before but iam not thirsty. i understand i need to go to see gp which i will on monday but i would like your opinions if possible thanks