I need help fast. I just received an adult WC male chuck 2 days ago. He wasn't that active from the start. Now, he's twitching/convulsing. I've heard of this happening with low blood calcium. For the animals sake, I feel I should take him to a vet, but I'm not crazy about having to pay vet expenses right off the bat. I've contacted the person I bought him from and hopefully he will help. Any suggestions of actions I can take right now while I'm waiting to hear back from him?

Thanks,
Perry