Female budgie has had swollen belly since I had her. Do they have false pregnancies? Could she have worms? She seems even a little larger than before and I can see her stomach skin under her feathers. Otherwise her activities and playfulness are the same. She doesn't seem to be trying to lay an egg. The second picture shows the difference in the shape of the females. It's very hot in Phoenix right now and I hesitate to take her to a vet in this heat.