Dog acting out

Honestly I don’t know where to post this. Maybe you ladies can help me though. The past week my dog has started acting out and it’s driving me nuts. She went from being clingy towards me to totally misbehaving. She started pooping in the house again. She is trained to do it outside but seems like she doesn’t care right now. She has started doing things our other dog used to do. Things such as digging through the trash. She has also been very mean to the other dog and it gets so bad I have to take the toys away from both because she won’t stop growling at him. Has anybody experienced changes in their animals this far along? I’m sure she is aware that a baby is coming in two months but man she is driving me nuts with her misbehavior.