Cervix dialation

Ok so I know I’m not supposed to stick my fingers where they don’t belong but I couldn’t help myself. I’m 38+3 and I can stick 3 finger tips inside my cervix. When I went to the dr the same day, she said my cervix was still closed?? I know my body well and I have never been able to stick even one finger in my cervix. Am I missing something here? If I can fit 3 finger tips up to the first knuckle in there then aren’t I dilated. Don’t worry I don’t do this often and I washed and scrubbed my hands prior.