Can some elaborate for me plz?

Karrie • 30 yr old Mom of 3. Trying for #4

I have a question well it is probably more than 1 cuz my chart is off the wall an nothing is coming as normal after the removal of the Mirena Oct. 18. Idk if I should write it here but no one else seems to be able to answer me or at least give me an educated guess...

Since it's removal I've had spotting about 4times. Started early morning Oct 20 an was gone by the morning of Oct 24. This what I would expect regular spotting to be.We BD on the 20, 22 & 23. FF said ovulation was Nov 6th due to positive opk on Nov 2nd, 4th & 5th. We again BD on the 5th.Then changed it after my spotting on Nov 13 & 14 (Normal as well) as well as positive opk on Nov 15 & 16. So it said I O'd on Nov 17. We again BD on the 15th & 16th. Then got heavy spotting on Nov. 27-30 an was gone by morning Dec 1st. Positive opks again Dec 2-4 an really dark today. I don't think I added them to FF yet cuz another site said it would be false surges. I spotted yesterday for a few hrs(like implantation spotting) then it stopped. All the pregnancy test I've taken say neg but Dec 3rd 4th & 5th have a very very very faint line, unless I'm developing line eyes from wanting it so bad. Can u possibly she'd some light on this for me. I never charted for my other 3 kids so charting, bbt, cp & cm checking is all new to me as well as this wacky spotting because before the Mirena I NEVER spotted ever!! My flow was always heavy(like 40 pk bx of heavy tampons or more kinda flow) from beginning to end. And it was always right on time give or take a week or so. Plz help, I'm sooooooo confused... 😔😪

1st Chart is FF(Fertility Friend) 2nd this Glow and last 2 are Kindara. How could all 3 be off with the EXACT same info entered.