Cervical position

Lynn • Been ttc since October. Been hard to have sex on days suppose to with s.o. a trucker.
I just tried to test my cervical position for first time. It was soft but I couldn't tell if it was high low or if it was open or closed. Do you have to put your finger very far in to feel it? What is it suppose to be ?? High or low? How do you tell if it's open??