I need some advice! I was holding my 7 month old guinea pig on the couch and he climbed up on my shoulder and was just sitting there.My 5 year old son ran from the kitchen into the living room where i was sitting and scared him. He jumped off my shoulder and landed on the floor! Now he is limping around in his cage and dragging his hind right leg around.he can barely stand. I have another pig in there with him too. what should I do??!!!