Virginity test

I was about 8 weeks pregnant.  I went to the doctor for my first check pregnancy check up and the nurse did her normal weight, blood pressure, questions about medications, then right before I left the room she said,
"Do you want  to do the virginity test?"
I narrowed my eyes thinking, 'it seems a little late for that!' But knowing how often I mis-hear things I said, "I'm sorry, what?"
She looked a me a little skeptically- and repeated, "Do you want to do the Progenity test? It's a genetics test for the baby."
I said, "Oh! Yeah- yeah that sounds fine."