My cat just had kittens about 4 weeks ago. She had a litter of 4, but one days after about 2 weeks. One of the 3 left seems sick. All it does is lay around, it just looks weak and in pain. It cries when the mother licks it, and it doesn't eat every time she feeds the others. I can't take it to the vet at the moment because money is tied up in something else. I was hoping there was something I could try and do until I can get it into the vet?