Cervical position help

Adriana
Hey ladies,
Hoping for some guidance in cervical position. This is our first month ttc#2. I have decided to educate myself as much as possible since I have pcos and opk necessarily aren't so accurate apparently with pcos. I haven't had a positive opk this month as I know it's possible I didn't ovulate but I can't seem to understand cervical position. How low is low and how high is high?? When i check I have to stick pretty much my whole finger up there to feel it. But wouldn't it depend on how long or short my fingers are? And don't get me started on open or closed lol! Any advice is greatly appreciated !! Thanks :-)