any second time mommies with kids in daycare?

I'm back at work this week and feel like on day 3 I've already missed so much. It seems like she was less smiley and affectionate with me today but gave her teacher lots of smiles. I might be overthinking it. I miss our morning cuddles and worry she won't care about me as much as she did. Will she think her teacher is her new mommy? Been really upset tonight worried about it. Also, my supply is already tanking so we have less breastfeeding time because she gets frustrated with no milk coming out 😢😢😢