Big Age Gap!!!

So HI! My names Lauren :) I’m 34 years old and currently 22 weeks and 3 days pregnant with A BABY GIRL!!! Me and my guy have been together since were 17. We have a beautiful 9 year old boy named Anthony annnnddd a 15 year old son Russell JR. so as u can expect news of having a girl is just so exciting right now!! But I can’t shake the feeling of —i don’t even know!— am I crazy? One in high school one in 4th and a newborn!? I was totally scared in the beginning almost not happy at all. Then I was over the moon! And now I’m jus freaking out lol is there anyone out there who’s been through this? Or about to be too?