Hi mommys and mommys to be !!

So I feel so bad writing this but I need some advice! I have a 16 month old girl who is the love of my life. We are pregnant with #2 due in October!

I'm having some mommy guilt! I feel bad being excited about #2 because I feel like that means it's not fair to my little girl. I'm also worried after the baby is born that she will be mad at me or something! We did try for #2 because I really want her to have a sibling. But after I got pregnant now it's hard to be as excited as I want to be!! I know she won't remember any of this when she's older so this is purely on me and my guilt.

Mommys of more then 1... Any advice?