so my dog princess got spayed today ;shes ten(big mistake should have done it sooner)also she had 4 breast tumors removed i was so worried about her during the surgery but the vet said the surgery went great and now shes home...she seems not herself AT ALL , all she does is lay there and sleep and ocasionally lift her head to look at me...is this normal? when will this wear off? p.s. she wont drink any thing and usually she drinks like shes never going to see water again lol