I work with somebody who is 46. She was complaining of feeling run down and tired. We all said, are you pregnant? "No, I couldn't be, I started the menopause 3 months ago....." Queue colleague going green and a look of horror coming over her face! She is now 47 and on maternity leave with a beautiful healthy baby!
I read years ago that women who get pregnant in their 40's naturally, meaning no fertility treatments, tend to live longer than others. It seems their bodies are chronologically running at a younger age than they really are. So besides a new baby to love you have another reason to be happy.