not sure if you've checked this out or not...but if you haven't you should.
click on ..... Cervical Mucous, Cervical Position, and Ovulation at the top of this page. it's underlined
when your cervix is high, it's hard to reach. you'll barely be able to get it with your finger. mid is probably up to your 2nd knuckle or so. low would be really super easy to reach. the dimple just feels like a dimple when it's closed. you can feel it but you can't put your finger into it at all. when you're oing, you'll be able to fit the tip of your finger into it & it'll be SUPER soft! like it says in the link....hard is when it feels like your nose. soft is when it feels like your lips or mushy.