My black rattie sage has been acting strange lately, when she plays with er rattie friends she will all of a sudden stop and start shaking/shivering then run and play again... I gave her extra food to see if maybe she was overly hungry or something but she barely eats and my parents wont let me take her to the vet because they think it is a waste of time for a rat to be taken to a vet.. someone please help me i dont wanna lose her