The stomach acids that come back up with the meal are the greater issue in most cases, Patricia. Anything strong enough to dissolve bones, flesh, hair, nails and teeth is pretty acidic. When that comes back up with the expelled prey it burns. It can also burn the outside of the snake if it ends up on the bedding and the snake slithers through it or lays in it. Nasty stuff all in all.

I'd agree with Rich here. I'd wait a good couple of weeks, then offer a prey item smaller than normal and see how that goes. In the meantime double and triple check your temps and assess your feeding routine to see if anything there might have triggered the regurge.

I have one female snake here that is the worst for backing her prey out. It's not really a regurge because she's still swallowing the prey down but if you disturb her at all during that process she'll spit her dinner out and go off in a snit.