Cervix after vaginal delivery

Ladies ive been trying to NFP but my problem is my cervix always feels open. Every time i check i can get the tip of my finger in (i have 3 littles) so tracking is difficult. Theres TIMES where its not a soft feel more of a firm feel even open. Currently its high, feels open and in between soft and hard. I have no clue what to think of it. 3rd cycle thats wonky (1st was after IUD removed, 2nd was after 1 month of no cycle, 3rd is now and late again but spotting, painful cramping, weird cervix things . sitting here waiting for AF to come.

* im not ttc but no one ever responds to me or rarely and often the ones who know are ttc regradless of how many babes and i seriosuly need advice. No ob ATM as im switching for good reasons. *