Some partners I have slept with, said I have quite deep vagina, and a gynecologist said its 'very curved, unusual'. Many of those who I had sex with, said my vagina is very tight and strong.

But I wonder is my vagina deeper than average? When Im very aroused and when I have got multiple orgasms already, I can take even about 20cm penis inside (not measured but my estimation).

This picture I took just a moment ago, I masturbated and took about 18cm of my dildo inside (without pain but slowly with lube). I had only 1 orgasms and did not have very long time to masturbate, so if I did, I think I could have took inside even 20cm (thats the maximum I think).

I wonder is this unusual or not?