I've found that keeping a simple calendar with photos works great for tracking the changes week by week - you'll notice her belly getting rounder and her behavior shifting pretty noticeably around week 4 or 5. Definitely recommend getting an ultrasound around day 25-30 from the vet to confirm how many kittens to expect!
If you think your cat might be pregnant, having a clear idea of the timeline can make caring for her much easier. This Cat Pregnancy Calculator helps estimate the due date and gives a simple overview of the pregnancy stages. You can try it here:
The tool is quick and user-friendly, providing instant results after entering a few basic details. It’s helpful for planning vet checkups, preparing a comfortable nesting area, and adjusting your cat’s care throughout pregnancy.
For cat owners looking for a free and practical resource, this calculator is a helpful option. No registration is required, making it convenient for everyone.