Mothers Instinct

I went back to work at 7 weeks pp. It's been 3 weeks and I still struggle with anxiety daily being away from my baby. I tear up often at work and have an over bearing feeling that she wants me. I have some questioning about her sitter. I just feel like something isn't right when she comes home from there she's very fussy. I don't necessarily think they mistreat her, but something is just making my mom alarm go off continuously!!