I’ve been monitoring her milk calcium levels as a means to help me loose as little sleep as possible. Last night she was at about 150ppm, this morning she tested at over 175ppm. According to my references, once she first hits 200ppm she has a 54% chance of foaling within 24 hours, a 84% chance of foaling within 48 hours, and a 98% chance of foaling within 72 hours. She lost her mucous plug yesterday, but some references give them 24-48 hours after, others 7-10 days. While she could stall here for a while, there’s a good chance we’ll have a foal on the ground before the week is out.
Lily’s milk is now testing around 50ppm, but she’s a maiden, and so may shape up faster.