The duct tape wrap on my hand is only to help keep it immobile. No cuts or breakage of bones, just keeping it from moving so it may heal.
I was working with a large wire cutting plier, aqueezed hard and heard a crunch, it sounded a little like stepping on a walnut. Didn't hurt that much at the time but hurt like hell by evening. If I take the tape off for a day it gets worse so I leave it on as much as I can. it's healing slowley but that 'crunch' wouldn't have happened 10 years ago.
Go to the doctor? I'll give it another couple of weeks.