My dog had puppies 2 weeks ago and is now vomiting alot.?

I have a pug and she is about 2 or 3 years old. She had 6 puppies about 2 weeks ago. Today, starting at around midnight up until now she has vomited approximately 15 times. What could be causing this and what should I do? Please no sarcastic answers. I am really worried about her and I can't take her to the vet right now because I don't have a license/car.