Oh, that might be it... had to look it up, but bangs causes abortions and other problems surrounding pregnancy, including "retained placenta with resulting uterine infection." Can you find out if Enola and Sheila were vaccinated? And maybe get the older ones done asap. Said it's very contagious.OH and one of my yak "experts" asked if Sheila had be bangs vaccinated and TBH I don't know. I do know ALL of my heifers have been.