Cervix Dialating?!?

Alexa • Expecting a baby boy! 💙💙💙 09/09/2015 Aiden Michael Esquivel FTM
I went into triage today because of some cramping, back pain, and cervix pain with some leakage. They checked my cervix and the doctor said she could fit her finger tip but then proceeded to say it was closed. I'm very confused because I thought the tip of your finger meant you were 1cm?