Hi dbcross

This all sounds quite concerning. Did the orthopedic surgeon re X-ray your foot before deciding to keep you in a cast ie what was the reason for the decision. As for the other foot getting sore -2 things come to mind

1. You have been walking badly on your other foot. I take it you are using crutches - have you been shown how ton use them properly? This could be some sort of overuse problem from favoring the other leg

2. You could be having some sort of reaction. There is an unpleasant problem called complex regional pain syndrome and although it is not that common it could account for both the reason the pain has turned constant in theinjurd foot and the burning pain on the unaffected foot.

It could also just be that you are getting aches and pains from being immobilized and can't participate in your usual activities -that can happen too. If you are anxious and miserable about your situation pain can be amplified. However from what you have said something doesn't sound right. For your own peace of mind I would persevere and get it checked out -the state of the stress fracture ( it should be settling by now) and the reason for the burning pain in the other foot.