I got new eyeglasses a week ago. The glasses are the exact same perscription as my old glasses. I just wanted another pair to have variety. When I wear the new glasses I get a pain in the bridge of my nose which moves up to my forehead. It becomes irritating and I can only where my new glasses for a few hours and then the pain starts. Could it be the nose pads are in the wrong position, or the glasses are a bit too heavy? I don't understand why I'm having this problem.