Burning in legs and hands. So fear.

I am suffering from diabetics. I knew it from April 2016, then my blood level is fasting 287 & pp 322. perhaps the diabetics problem caught in my body may be from last 3/4 years. but i did not test my blood glocuse level before of April 2016, but the such symptoms i feeled from before 3/4 years ago. I did negligence to take treatment in time due to ignorance of diabetics knowledge. but After april 2016 i knew about it. From June 2016 i took up medicine for 3 months continously to sugar control as GP-1 & Metformin SR 500 twice daily before and after meal respectively. on 11 Sept 2016, atfer tested of blood sugar it was found that my blood glocuse comes at 74/119. I did continued again the same medicine in same dose upto Dec,2016 & checked up sugar level again it was found 86/136. but my legs and hands burning is going on, in the cold weather is increases the burning feel, additional symptoms also seeing as hands fingers joint is swelling. what should i do i m getting so fear.