Many congratulations
Many congratulations on both counts, Bday and baby.
I am in a similar part of life. 44 and our little boy is 20 months old, we had a late start but that was due to my wife having a kidney transplant nearly 4 years ago now and then it being possible to have kids. We were told many years before that due to her illness and subsequent dialysis that kids would never be possible, but hey, lifes a constantly changing game.
Enjoy every moment.
Jamie