Well the average is 45 days to egg from ovulation, but I have had females go as long as 65 days, depends on the female but also tempertures. (It's rare but does happen
One of the important thing with beeedings are date especially ovulation date, pre-lay can be tricky as I have seen female having 2 pre-lay shed (rare too but it happens). So next time write those down.
At this point it's about behaviour make sure the animal is not in distressed, make sure she is not swollen in the last third portion of her body.
How and where is she positionned when at rest?