Cervix question

AF is due Saturday I'm about 10dpo now. I think I'm feeling my cervix correctly, if I insert my index finger I get just up to my first knuckle which I know means it's probably low, however everything I've read says if it's low it shouldn't be soft. I'm able to insert a finger and it feels pretty soft. After I insert my finger it makes me a little crampy too. Is this a sign AF actually going to show up or possibly early pregnancy?