there are a LOT of reasons for leg pain from Neropathy from diabetes to a blood clot to a pinched nerve in your back. go see an MD
If ecg shows BORDERLINE ECG. then does that show a sign of heart problem
You shoudn't let this go without an immediate in-person evaluation. Leg pain is often due to what is called intermittamnt claudication, which often develops in diabetics. They usually give you a color dopplar of the legs for differential diagnosis. In the meantime improve circulation with omega-three supplements, two half-teaspoons of arginine (one half teaspoon every 12 hours) and magnesium supplements (500 mg a day). The reason you need an in-person exam is to rule out a clot.