So sorry to hear about your fall AYG, poor you, you do feel really embarrassed more than anything else don't you? I would fill in an accident form, then see how you are.
I had an accident at work 30 years ago, a workman was repairing wiring under the floorboards, he'd gone for his lunch, and replaced the office carpet over the gaping hole (yes really!) and I was hurrying across our large open plan office to give someone an urgent message. You can guess what happened, I fell right down the "hole" I felt so so stupid, hurt my shoulder, bent my glasses and twisted my ankle. Word of my accident spread around the office and about an hour later a Personnel Officer rang me to ask if I would be putting in a claim (unheard of in those days!) I said not as I was too embarrassed as I'd still got to continue working there! If I had known then what I know now I could have been a bit richer in my twilight years!