Puppy had a oatmeal raisin cookie.??! *Help!*?

This morning I noticed my 16 week Yorkie was nibbling a bunch of my moms homemade oatmeal raisin cookies, and their HAS to be ad-least 11 raisins in one cookie. He ate approximately 2 cookies. I quickly took away all of the cookies, and threw them away. Then, I asked my sister if she had been eating the cookies, and she admit some fell on the floor and she didn't bother to pick them up. Then, I went to my mom and told her the situation; she said dogs are extremely toxic to raisins. I researched that on my own, and it says dogs can DIE by a few raisins.??!! I was extremely worried, and called our local vet. They are packed, and the next possible time they have is 10 pm. *It's almost 11:30 am*. I tried talking to the lady, I even told her it is an emergency, but she said she couldn't make any possible exceptions. What should I do? I gave my dog lots of water, and he is not drinking alot. I put him to bed, and I noticed he didn't sleep, but got all sleepy-ish, and tried to hide from me. What should I do? I got him not too long ago, and I love him deeply :( PLEASE HELP :'(