My bearded dragon is "pregnant" or so they say. PLEASE HELP!?

Gravid is the term you are looking for but what makes you think she is gravid exactly? They normally lay several eggs and get a bit full looking in the stomach area. Gravid females can go off their food in the week before laying and may spend time digging in corners of the cage but they don't tend to look ill. Provide her with a container of damp sand but I really think you should get her or at very least a sample of that runny stool to a vet as well.