Pre Diabetes

I am new to this forum, and would like some advice. I have not been feeling well for a while, random pains especially in my legs, walking is painful, and in bed at night my right leg especially feels like its been strangled (for want of a better word), went to the doctors on many occassions with basically there is nothing wrong with you, this diagnose was done by just looking at me. I have grave's disease, so get ill frequently. In December i developed a pain under my ribs and down the my right side, also feeling sick blurred vision, going to the loo about 5 times a night, blood test were taken and the result came back that the glucose in my blood was 8.4, the doctor said she was not too worried as the test was taken at 12 in the afternoon and i had eaten breakfast and possibly had some lunch, i told her that was not the case i had not eaten anything, a second blood test was taken along with blood test that tells my glucose levels in my blood for 8 weeks, the blood test was 7, however the 8 week one was 6.4, told i am pre diabetic. I asked the doctor what was causing blurred vision feeling sick. going to the loo alot through the night etc, she said she was not sure. I am very slim 48 years of age, don't drink, smoke. keep active,. The doctors advice was to stop drinking fizzy juice, but i never touch the stuff, (tea and water only) i dont eat bread biscuits, chocolate, and all meals are cooked from scratch. My worry is 2 blood tests came back that would indicate i was diabetic the third 8 week one at 6.4, indicating pre diabetes. Do you think i should be asking for a second opinon especially as i do not feel well. Can someone explain to me what feeling ill with diabetes symtoms are, as the doctor told me there was,nt any.

Thank you, for your reply, i will seek another opinion from another GP. In the meantime is there anything i can do to relieve the symtoms? Do you think as i have autoimmune disease this is a factor rather than what i actually eat? as i don not eat or drink what the doctor has asked me to avoid, my diet normally consists of fillet steak, chicken and fish, normally served with fresh veg, new potatoes. I am worried that i can not bring the blood sugars down by changinf my diet, and to be honest i do not know what i should be eaten to do this.

Hi, Staycalm&hopeful, i have been feeling ill for months, however since December i have been feeling sick, light headed and basically just rubbish, i have a small rash on my arm and have an itchy skin, may be it my arms, legs or my stomach. I understand the feeling of just wanting to go to bed, i am so tired, however i keep going by trying to keep busy. I am not asking the doctor to perform miracle's my only wish is to get up in the morning and look forward to the day ahead without feeling ill, one day is all i ask.