if you're unsure what happen. wait the week or 10 days. even if it wasn't a regurg. the time off won't hurt the snake. if it was a regurg, the fluid in their stomach is very strong. bringing some of that up with the rodent can tear a snake up. the waiting period is to give the snake time for all that to settle back down. if you feed too soon and the snake has another regurg close to the first one, this can lead to bad things. when one of my snakes have a regurg or seeing the rodent totally wet. I wait. as the saying goes "better safe than sorry" your snake missing a meal or 2 isn't going to hurt it.