Losing twin number two

I knew from the time I heard the word midwife that was my calling. But I was still an L&D nurse when I had a miscarriage. As an educated, midwife to be, "patient", I allowed a resident OB to tug on my cervix BEFORE assessing heart tones. I subsequently miscarried twin number two. I knew after that experience it was imperative to help women. If my strong self was helpless in stirrups, how many trusting women were harmed by the system?