I am watching a friend's very pregnant (due within a week) mare while she is out of town. When I checked on her this evening she was having discharge and she has sticky clear colostrum coming from her teats. How soon until she foals would you guess? I don't have pics :( I had to rush to work and probably can't go back until morning...unless I am told there is a good chance she will foal tonight....any advice would be very much welcomed. Thanks in advance!