1 day postpartum

Anyone else sad that their baby isn’t inside them anymore? Like I think I feel this way because I just had my baby at 35 weeks and she only weighed 3 pounds and she’s in the NICU for now. And I’m just sad she’s not with me anymore,when I’ve felt her inside of me for the last 8 months. I keep feeling phantom kicks and holding my belly like she’s still there and she’s not. It’s really getting to me, especially at night when she used to move all the time.