let me tell you about my lil black girl Lexie, I adopted her from a shelter, she was only 9 mths old when she was found pregnant, she gave birth and all her babies died and she nearly did as well, I am not sure what exactly happened or what was wrong with her as they did not seem to know for sure, but that gives you some indication of just what can happen to a young cat, so please get kitty SPAYED as soon as possible.