Better get used to this response

We told mil today we're pregnant with number two and she was thrilled and asked when the baby will be arriving. 4 days before my sons 4th birthday.
Oh well that wasn't planned very well was it! Was the response, we've been ttc for 6 months so didn't exactly plan for another September baby but are thrilled we're pregnant.
Guess most people will do like your due date when we start telling them :(