pregnent horse

Question
how can i tell how close my mare is to delivering her colt. she was breed may 27,05.her sack is large and full of milk. she has been restless for two days she keeps getting up and down and looking at her sides alot but still is eating good should i be concernied.

Answer
When she starts to not eat as much as normal, you know that she could deliver in minutes, hours or even the next day. Let me know how the delivery goes. Good Luck!
P.S. When she starts eating less, have someone with her 24-7. Also when she starts to constantly grunt and whinny, she'll probably give birth in the next hour or so.