I hope it was a harness and not a belt. Dropping only a couple of feet will exert over 1300 pounds of pressure on you, and that will definitely jolt you a little. I took a tumble from 250' off a TV tower a few months ago, thankfully I was wearing a harness. Much like you, I took the spill because I got a little careless on that tower that day.

Glad everything is ok. Now, replace that harness, you can not tell if the threads were damaged on them.