Is my cockatiel pregnant?

I have a cocktail female and I got here yesterday..well I just look at her and she is really big at the front part of her body I did not notice this yesterday so I was wondering if she is sick or if she is pregnant??

Hi,

If your cockatiel was kept in a place with male birds, it's possible that she's pregnant. However, cockatiels lay unfertile eggs around their first year, so she could be preparing for that. The best thing to do would be to take her to a vet or bird rescue/avian specialist.

Good luck.