I recently a week and a half ago hurt my lower back and sciatic lifting at work. I don't have pain really on a daily basis since day of incident, but my sciatic area is sore still and when walking longer stretches my calf starts to burn and foot starts to feel a little numb. It subsides when I take a break....Last night I awoke to my back feeling warm and burning ,not really pain but concerning. I was also sweating on my back. I do notice some improvement in circulation of my heal, but want to know if this could be my body trying to heal or something I should be concerned about?