What most naturally follows?

How to help a cat give birth
Look for signs of pregnancy.
There are several signs you can look for to help you discern if your cat is or might be pregnant.
Common signs of pregnancy in cats are pink, enlarged nipples, a swollen belly, and an end to mating calls.
Take her for a check-up. Once you know your cat is pregnant (or if you suspect that she may be), take her to a licensed veterinarian for a medical check-up.