My Miniature Schnauzer has a bladder stone and is awaiting surgery (I have a popular vet with a tight schedule). I have been unable to reach him today and need to know if there is anything I can give her for pain from the spasms. She weighs 25 pounds. (I KNOW! She likes to eat!) If there is anyone with medical knowledge concerning this please respond. I have Valium on hand but do not know the correct mg to give her. (They belonged to another dog with a rash problem.) Any suggestions will be appreciated. She is in pain!!