Sounds scary to me, I'd definitely call an ER vet and see what they say. Eclampsia is a real possibility and you don't want to wait too long to get her medical attention if this is indeed what is going on. Also try posting this in the Breeders section. Oh, also, if you're using a heating pad or lamp, make sure that Momma can get away from the heat, like only have it under half of the bed for the puppies.
Prayers going up that your girl is just fine
