I have a 3 year old cat named Cindy, she went into labor yesterday morning and safely delivered 2 healthy kittens, however the 3rd kitten proved difficult and she was in labor for a couple hours. Eventually she delivered but it was still born. I thought that was the last of it. She's in good spirits today and is eating and acting normally but her stomach is still swollen and hard and she seems a bit uncomfortable. Are there more kittens? I can't really see a lot of movement. Should I be worried??