If that were my dog I'd see about getting her to a vet tonight or first thing in the morning.

When an animal vomits you shouldn't try to give them more food for at least 12 hours, and limited amounts of water. When you vomit you don't feel like eating right away do you, animals tummies get just as quesy feeling as ours do.

It doesn't surprise me that your dog isn't peeing/pooping like normal, if nothing is going in, nothing will come out. Although I'd kinda worry about possibility of a blockage of some kind also which might explain what's going on.

Don't wait until Saturday, get your dog in as soon as possible. Keep us posted and I hope everything turns out ok.