Anatomy scan - gender shock

We had our anatomy scan today for our last baby and after two little girls we found out we are having a boy! I had a feeling all along it was a boy but I kept denying it. I just assumed I was wrong and it would be another little girl. I will work with my counselor to overcome some concerns but was hoping for some other perspectives, and reassurances, from people in similar situations.

My main concerns are:

1. My middle daughter being even more than just the middle child, but now not unique in that we have another daughter. I was already cognizant and worries about middle child syndrome. So now dealing with the middle child dynamic and being just “one of the girls.”

2. Our little boy being even more than just the baby. So now dealing with being the baby AND the only boy.

3. I’m just so used to little girls that this feels like my first baby all over again now! I don’t know how to be the mom to a boy.

I’m sure these seem silly, but as someone who struggles with anxieties and what-ifs (hence the counseling) they feel very real for me. I know I’ll work through it in time and with help, but curious to see if anyone else has gone through this, especially those currently with similar situations (two girls then one boy or two boys then one girl) and how you worked through it and how things turned out!

I’m sure when he is here he will be the perfect completion to our family but its a bit of a shock right now.