Having high blood sugars could lead to diabetic neuropathy, nerve
damage. This could be the reason for swollen feet and numbness of fingers. Keep in mind, uncontrolled neuropathy will lead to amputation.
* Your doctor will order testing to see why your urine is dark as it could mean a urinary tract infection, liver or kidney disease, or hepatitis c.
* Metformin - To understand side effects always read the pharmacuetical paperwork accompanying medications. Or use Google.