Your dog is in pain right now. But she will poop. My Shih Tzu fell down the stairs this summer and it took her 3 days to pee and 4 to poop. She had really hurt her back and did not walk for almost a month. I would certainly call or go see your vet and voice your concerns.
The more I get to know people, the more I love my dog...
There ain't no cure for stupid ...... but we should make sure we laugh and point it out to everyone else