Hi so about a year ago a stray cat wondered up to my grandmothers house and had 2 kittens. At the time no one was paying much attention to her because she was just a stray but now she and the two kittens have become pets. Recently she became pregnant again. Friday I checked her and I could tell she was getting extremely close to having kittens. Saturday afternoon I checked and the kittens were born(you could no longer feel them inside of her). However we haven't been able to find the kittens anywhere. I'm most concerned because mama cat seems to not be taking care of the kittens as she is always out and about by herself. I'm concerned that she had rejected them or that they were stillborn. Does anyone know how common this is? Should I be concerned that she isn't with the kittens all the time?