Hi.
Context: I watched a video today. It's about a couple who married for eight years but they didn't have any children. But today the wife found that she was pregnant then she told her husband this, her husband was so happy that he cried because he waited for eight years for him to become a dad. I wrote a sentence about that:
You'll never know what real happiness is unless you become the man who is told that he's going to be a father at the eighth year of his marriage.
I wonder if it's natural. I might say the above to my friends.

Student or Learner