My cat gave birth for the first time and delivered only 2 kittens. How do I know there’s no kitten remaining in her belly?

Hi Isra. If your pet isn't exhibiting symptoms like straining, panting, increased vocalization, constant licking or agitation, it's likely that she has delivered all her kittens. A clinical examination with X ray or Ultrasonography is required if any of these symptoms are shown by the mother cat.