Attachment issues with my SO

Since the day I went into labor a week ago. my SO took some time off work. He returns to work tomorrow and I feel lost and I feel like I can't do it without him. I just wanna be with him and my baby all the time. I don't feel comfortable without him. I've been so emotional knowing he goes back to work in the morning.

What's wrong with me? I don't wanna be one those needy girlfriends.