Guilt over gender disappointment 😞

Ladies, I just found out the gender of our baby. My husbands birthday is tomorrow and I am going to surprise him tonight with something (haven't decided what). I have a pit in my stomach because the results show it is a boy - I knew in my heart it was a boy, and this whole thing is still surreal to me. I would be lying if I said I didn't have a preference - I always pictured myself being a girl mom. The important part is that everything came back low risk and my baby is healthy. How do I get over the slight pit in my stomach of having a boy? I don't know why I'm so scared - everyone in my family has had girls so I just always assumed I would have one too. Any advice, or any words of wisdom from anyone who maybe felt the same way?