What position should you use when checking cervix?

Brittany • Hi I`m Brittany
I was just curious as to what position would be the most accurate Wenger I'm checking my cervix for night on open soft ect. Should I stand, or kinda squat or do it sitting on the toilet or put one leg up , because I had been checking on the toilet or standing but get two different results when it comes to the height of it , what do you do? Sorry I know tmi