I'm gonna say I'm a little nervous about how my 2 year old is gunna act when my daughter gets here…

I'm gonna say I'm a little nervous about how my 2 year old is gunna act when my daughter gets here my son is n behavior therapy BC he came back from his dads with a bruise and took him to doc same day hasn't n won't b back since. but his behavior around other kids n towards me since he left his dads that day has been way worse he rubs my belly n talks to his sissy but I'm def nervous