Cervix measurement??

Brittany • Married💍 1 amazing little girl 7-9-19🤱🏽

I see everyone talking about a “short cervix” or their cervix measurements, but to my knowledge I’ve never had this? I’ve only been examined by my OB once at 8 weeks to be sure cervix was closed and there has been no other talk of it sense.... did she do that when she checked to see if it were closed? Even had my anatomy scan today and no exam was done. Didn’t see normal doc so that’s why I didn’t ask her lol