Granted that you saw an ovulation and that it was a pre-lay shed you are still on schedule, now you female as mentioned above should be on the warm side.

If you want certainty given the time line simply do this hold your female straight head down and tail up and reverse the position head up and tail down, as you slowly reverse the position if she is gravid you will not only see the eggs moving but will be able to count them (of course be gentle)