No longer in heat: Cats are animals that estrus regularly. When a female cat is in heat, it will have a unique call. When the female cat finds the male cat to mate, the female cat’s estrus will temporarily stop and enter the pregnancy stage.
After approximately 15-18 days of a cat pregnancy, you may notice that your cats nipples become enlarged and red.
Your cats’ tummy will start to swell, but avoid touching it so you don’t risk hurting mum or her unborn kittens. (There can be other causes behind abdominal swelling, so monitor your cat closely for any signs of illness and consult your vet if you are worried.)
Weight gain: The biggest change in a cat’s body after pregnancy is getting heavier. It will probably increase by 1-2 kg.