Okay this is probably a silly question... but I am honestly so curious!!

Little backstory: I was researching about using a menstrual cup, and one question I had was how to know which size to get. On one article I was reading, it said to measure how long your vagina is by seeing how far in your index finger could go before hitting your cervix. Which I then tried, and I never hit my cervix!! I even used my middle finger since it’s longer and really shoved it in there as far as it could go and it never reached!!!

Is this normal?? Can most women touch their cervix??