Cervical OS help. Please

So I’m feeling my cervical os... checked to see if it is open or closed (I am new to this and can’t really find what I’m wanting on google.)

I can feel the indent (dimple). It is up pretty high so it is hard to really tell. So my finger can press into like I can feel a little bit of rough and smoothness but I can’t actually push my finger into it (as if I would into my vagina).

So so so hard to explain!!

Any advise or explanation on what it would feel like if it was closed? Would I still feel a dimple, would I be able to push into it??

It’s driving me crazy... also using opk... having pelvic pain also.