I would be a little concerned if she is constantly moving about the cage as you describe and you feel that she is gravid. What are your current ambient and cage floor temperatures and what is the temperature gradient across the cage floor if you have set one? With burmese pythons, the pre-laying shed will typical occur from 20 to 24 days after ovulation and egg laying will occur 48 to 50 days after the onset of ovulation.

Kelly