Gender disappointment- or whatever is going on

Looking for some advice.

I'm a 42 yo mother of 2 daughters, 2 and 3. They are my heart, my life, my breath. I can't explain the love I have for them. We went through IVF for our first, and she was a 3 day embryo. Meaning, we didn't know her sex. Fast forward, I am now pregnant with our 3rd. I have gotten so used to being a mom of girls, that when I found out we're expecting a boy, I wasn't thrilled. Actually the opposite. I can't picture being a mom of a boy. I'm happy to have this opportunity again, it's not that. It's that I'm just sad it's a he. I also know I sound really selfish.

My husband is happy. And, people of my culture LOVE boys. They have a saying "golden dick." That's how much they love them.

Does this feeling ever go away? Will I end up happy, or stay a miserable disappointed old mom?