I'm just looking for some empathy here I guess and maybe to get this off my chest.

My DD is 6 weeks currently. I'll be going back to work full time when she's 3 months at which point she'll be home with a nanny. I'm getting SO SAD about the thought of someone else spending the entire day with her. Right now I'm the expert in everything related to her because I spend the most time with her. She smiles when she sees me in the morning and stops crying when she's in my arms. I know all her little ques and wants and needs and how to satisfy them. The idea that someone else will be spending more time with her and will now know all those things more than me is making me so so sad. I keep thinking what if DD thinks the nanny is her mama because she'll be with her all day? What if she starts responding to the nanny better than she does to me? urgh. just so emotional over this.