Out for a walk

Just went for a walk again, all was going well till I started to head home. Then for some reason, I tripped and fell, not your normal fall where you catch yourself with your hands, I fell litterally flat on my face. I did not pass out or anything like that, just tripped an fell. Needless to say I have road rash on the right side of my face and on my chin, blood etc. Overall I'm ok, no problems with my recent surgery etc. just my face and the road rash.