So my SO went to the store he was gone a while and when he came back he had his sister kids. How…

So my SO went to the store he was gone a while and when he came back he had his sister kids. How selfish if you to bring someone else kids here I'm supposed to be resting to prevent preterm labor I have 5 children of my own to deal with and his sister kids are terrible. They curse and talk back. I'm getting really fed up with his thoughtless decisions😡😡😡