Congratulations. Five years from now the insanity of it all will be a moot point when he/she looses their first tooth or you walk them into their kindergarten class, leaving with a tear in your eye cause your going to miss them.
Think of it this way. Some of us would do anything to have a child. You are envied.
I have friends that have traveled all around the country to specialists and tried for years and are younger than 44, so I guess I would say grats and what a blessing for you.