A dumb vagina

I've never had a doctor mention it while getting paps so I mean I'm not too worried but I am if that makes sense

Okay, so you see the vagina here. It gets wider as it gets to the cervix.

Mine doesn't do this. It gets more narrow and smaller as you get to my cervix. Its more wide at the opening. I asked my man who was like "yes I noticed that, and it's amazing. It gets tighter the deeper you go"

And I mean like, oh. Thanks.

But that's not normal? What happens when I'm in childbirth and the baby gets stuck because of my backwards vagina? Yikes