Normal to be scared?

First pregnancy here and for the first time , tonight I was hit with a wave of anxiety about the birth process (which is still a long way off I might add).

Is this normal?

I mean this is what we wanted (and we are thrilled about our little bean) and yet I just cried like an idiot.

Any reassurance from those who are onto #2 or 3 or +? Any other first timers feeling a bit overwhelmed too?

I'm ready to be a mom but birth scares me.

*posting anonymously because I'm a bit embarrassed to be feeling this way*