Well after 2 months, and 4 weeks of incubating my horsfield eggs, thinking that they were fertile, they went 4 weeks over their due date, so I eventually cracked them open, to just find rotten yolks! And it smelled disgusting! I was really gutted, as it was my first experiance with tortoise eggs, however I was very proud of my little lady Amber, for being able to lay them!