Strange feeling on top of feet up to mid calf.......

I'm a 53 yo, 300 lb. cauc male with type II, insulin dependent for about 3 yrs. I just recently noticed some numbness in me big toes. I've not noticed any problems with soles of feet, but have recently noticed a burning sensation that is on the top of my feet and going up the front of my legs to about half way to my knees.

I am quite fairly inactive and realize that exercise and weight loss would help my situation tremendously and am working on that. But right now I'm pretty concerned about this foot/leg problem.

I do have some slight swelling in feet and legs at times and have even thought in terms of heart failure, but was just wondering if anyone had experienced the same problem.