Disappointed in myself. Am I the only one?

I’ve wanted a baby for as long as I can remember. Now that I’m pregnant, I haven’t felt the connection that I thought I would feel. I know I will when he/she is born for sure. Maybe even more when I know if it’s a he or she. All I’ve been thinking about is missing the way my life used to be. My husband and I are newly married, and only 24&25. We partied together with friends and family every weekend. We enjoyed wineries and sitting on the porch together after work enjoying a few beers. I’ve craved these moments more than anything. Why am I thinking so much about this and not enough about doing what I need to do for my child? I feel selfish. But I’m missing my life, I hate that I miss drinking, and just wanna get out of this funk 😞 when does the excitement start? I hope I can get some relatable feelings/comments on this rather than judgmental ones.