cervix length

styxx

what is the normal depth of a cervix? i have been researching for over an hour and everything keeps saying 3-7 inches, but cervix is deeper than that. i got my annual exam back in september and my obgyn had to use the XXL speculum (this is always the case), which is 7” long. She said she still wasnt able to see it so she had to push deeper with the speculum until part of her hand was inside. it was only then that she could see my cervix, and i felt the speculum touch my cervix

please help me out here. supposedly i had a miscarriage in september (the main reason they checked my cervix in the first place) but im worried that maybe the tests could have been wrong and my uterus just makes it impossible to find any baby