Well, would guess this is a common situation after such an injury as you've had! Burning pain may be the result of nerve damage sustained in the injury. When do you next see your doctor for follow up??
You have a pretty extensive injury. How did you do that again? And yes, that is conflicting advice and that drives me nuts when that happens! I would hope two days would not have caused nerve damage. Much more likely to have happened during the injury. That CAN get better on its own so do not fret. You have a whole week to wait until you see the doctor? Gosh, this has to be super hard. REmember that most doctor's offices also will take calls for questions. So, you could give them a call before you see them to ask. ?? That might be peace of mind even if they can't tell you much. Let me know how you are doing. Are you house bound?