Impaction chewed the puppy pad-when can I stop worrying?

Last night, the girls dug the fleece up and chewed part of the puppy pad (both the blue plastic edge and some of the pad). I've spent all day watching them like a hawk. They're both eating normally, and peeing and pooping. One had a period during the day when her poops were slightly larger and softer, but they have now returned to normal. Neither one seems bloated or acts uncomfortable when I feel her stomach. I have avoided veggies today to avoid trapped gas, just in case.

When are we out of the woods?
Should it be fine to resume veggies tomorrow morning?