I have had my ball python for almost 9 years. I handle him occassionally, but he is always very manageable outside his enclosure. Never aggressive. Last week he bit me on the wrist. Very unexpected. I did get him loose, but he drew blood. The next day, I hardly noticed. Today (1 week later), the wound is extremely irritated, red, and itchy. The wounds created by the teeth marks are prevalent on my skin. Should I be worried about this?