I'm having one cow that is pushing very hard but not like she is trying to calve. It looks like it's coming more from her anus that her vagina. She strains hard and then goes and lays down away from the rest of the herd. She will still come to feed but she goes and says down afterward. Has anyone experienced this? She is also about 3 months away from calving and doesn't look to be bagging up. Thanks!