My cat had five kittens three weeks ago and the last couple of days she has been acting like she is hungary. I got her vitamins thinking the kittens are draining her. Tonight is the first time she has been crying a lot and I tried feeding her tuna, egg and milk mixture, treats, and the regular cat food but she just won't eat. So I forced some egg and milk mixture in her with a dropper and she took it good. Also she isn't walking very well and stumbling. She is shaking and falling over. Its late so no vet is open so I feel helpless. What is happening and am I doing this right? What should I do to help her more?