i have a year old female ( Emerald) who acidentally I think is pregnant, here's the problem, yesterday her tummy was quite hard, and today her tummy is soft, what's going on??

her due date will be Jan 29th, any help would be appreciated. I also have a 2 year old male, we had a diaper on him and the once I thought it was okay to let him out of it, he got Emerald, i had no intentions of letting her get bred at such a young age. Thanks for all the help!