So I read somewhere that you could check your cervix yourself to see if you've dilated. Well I tried…

So I read somewhere that you could check your cervix yourself to see if you've dilated. Well I tried to do just that, but I can't find my cervix 😳. I reached my finger in as far as I could go, but I didn't feel anything. I know I have one (lol duh), but how do I find it?