As you are diabetic having obesity can have any problem leading to more complications in any part of your body so be careful.
Problem you are having is mainly due to diabetic neuritis
you should also worry for diabetic food which is very serious problem.
You remember following points by heart,
under fully control,
Reduce your weight,it is very important,
Strict diet control,
You consult diabetologist
for your leg complain to rule out diabetic foot
Ok and bye.