Its definitely gonna take more time than one day for her to dig and lay eggs, they can take along time of scratching around and searching for a good spot to dig, but its usually pretty obvious she is carrying eggs that are fertile but infertile is hard to notice b4 its too late.
how long has your cham been going to the bottom of the cage for?... 1 night, 1 week, 1 month :O. details, details