This topic actually already has been discussed in this very section, here (if you look just a bit further down in this "Help for New Tamagotchi Owners" section): https://www.tamatalk.com/IB/index.php?showtopic=171055. You are correct, it does take 2 days after marriage. Have you paused it at any time, by any chance? Also, if you haven't paused it and it's still been 2 days, I think all you need to do is wait a bit longer and it will come. Good luck!