Hi, I have a 4 yr. old (overweight) red angus cow and she is 1 day past her due date. This is her 3rd calf and she has been at least 3 days early each time (both a heifer 72 lbs and bull calf 70lbs out of Glacier Logan) We breed her to Combination this year. She is bagged up and her vulva is very saggy, she is also cranky and has been this way for a week. Do cows follow a pattern as far as early calving or is it the bull and a higher calving weight?