Looking for some reassurance..

I'm 7 months pregnant and have a beautiful 3 and a half year old daughter and I can't get myself excited for my little boys arrival in the next few months because all I do every single day is worry myself sick about how my daughter will feel about another baby coming in to our lives forever and how she'll feel not having all our attention anymore I just don't want her to feel pushed out or feel sad and like everything changed for her I don't know I am just worrying myself sick and don't want my baby girl sad so I can't get myself excited if anything am dreading it and that makes me feel like a bad bad person.... 😴😟