Pre birth shed?

[Stefan-A]

As far as I can remember, most of my animals go trough 3 sheds before giving birth.
At the first shed, mating takes place
The second shed is around 1.5 months later and a good sign that the animal is gravid
The third shed occurs somewhere close to birth. If I remember correctly most of my animals give birth around 2 or 3 weeks later.

Now this is useful information to me. My (hopefully) gravid female vagrans shed for the second time almost two weeks ago and it's been 69 days since they mated.