What do you call pre-shed do you mean POST ovulation shed?
If your female ovulated she is not gonna absorb, so did she ovulate?
If she ovulated stop palpating a female that ovulated and if she is 46 days POS here is what you can do take your female out hold her head up tail down and turn her tail up head down, if she is 46 days POS you will be able to see the eggs and count them.