I'm assuming it's not possible but we have a Dexter heifer who it seems like is eternally pregnant. We missed when she was actually bred last summer, my father passed away and we were traveling a lot over a period of about 3 months. She's been bagged up heavily for a month now. She's loose in the back and over the last few days her hips have sunk in but not as much as I've seen in our other cows before they delivered. Do I need to have the Vet out to check her?