I have all 3 levels of every tech there is and there are 66 in my village 31 are children. No golden child yet! What have I done wrong. I have the chest, idol, fish, flowers, everything before you had to had GC. How do I get him? The villagers just won't give birth to it!!!

You can look at the spoilers thread in the Virtual Villagers Guide. It will tell you exactly how!