My bearded dragon has what I presume to be yellow fungus, a ring around the end of his tail was a strong yellow. I immediately set up a very appointment. Since the appointment was so far out, I decided to take measures into my own hands while we waited. I started putting some antibacterial cream on his tail once a day. After just under a week, he shed the affected area, and now instead of yellow his tail is white, he is not a white bearded dragon. Should I be concerned or is this part of the healing process?