Thats a little harder question.....if she had bred and you had seen her then I would say 3-5 weeks. But without her breeding I m not sure. Maybe someone else will jump in.
Sounds about right. Although it is not that common, females can lay infertile eggs without being exposed to a male. It is important to provide her with a lay box, as the most common contributing factor for egg binding in cases like this is due to the lack of an appropriate place to lay them.
i will say there is a male in there but hes only about 4mo... but does the fact that i can visually sex him maybe mean hes older than i thought, hes only about 5in he is quite chubby though