Cervical position

Amber • 7/1/09 miscarriage (8w2d), 5/31/10 my son was born, 5/26/15 chemical, 6/24/15 chemical.
I need help!! I'm freaking 31 and honestly don't know how to do this. My fingers are short, and fat. Anyone have any pointers on how to best find it?
Today it seemed as if I touched it a small bit, it seemed firm, but I couldn't feel far enough to see if there was an opening at all. (Sorry if this is tmi.) I was squatting, and pushing out like I needed to urinate. 
I feel like checking your CP is one of the most difficult things ever. I'm frustrated.