my kitten

i have just had a cat, only 8 mths old. in the first few days she escaped as she was yowling and had her butt in the air. i didnt know what it was. 7 weeks later she is getting rounder in the tummy. is she pregnant

Sounds like it. 

If you read through the forum, you'll find a lot of great information on how to set things up for her to give birth.

Is she going to be spayed after having the kittens?

Thank you for coming to this site, it will give you valuable information on your cat and her care. Cats can come into season as young as 4 months and will keep coming into it until they are pregnant! Good luck with your little one, bless you for adopting her and giving her a home!