Our nubian doe, Pepsi, was due to have her kids several days ago.... We're on day 158 and still no signs of labor. Everything was looking fine until I went out to milk the goats this afternoon and Pepsi's udder (left side) was swollen significantly more than the other side. It was not that way this morning when my sister went to care for the goats. Her udder filled up about a week ago, but the left side was not swollen like it was tonight... so, it was a pretty huge change in a period of 12 hours. She is a first freshener, but I'm not sure if that could have anything to do with it. Could it be mastitis? Or something else. I'm attaching a few pictures for reference.