AF is 1 and a half days late and getting a BFN.... advice needed

[SarahMc]

So heres a bit of my story and hopefully you can offer some advice.

I had a Merine/iud in for nearly a year, so not very long. My cycles have been irregular ever since but i have been trying to track it through CM. I have found out that at least i now know my LP is 14 days, so usually if i get a good amount of CM i can calulate when AF is due.

This month it seemed abit harder to do, i started to get CM over the weekend i thought i was cd17 which i thought was good but i didnt get as much as previous cycles and then after about 2-3 of when i thought i O'd i got ALOT of creamy cm and this continued for about a week and for the rest of my 2ww i felt "wet" down there so basically i never "dried" up after O like normal either.

According to when i thought i O'd AF was due yesterday and stil isnt here so I tested with a First Response test today and got a BFN, So Confused.

About 6 days after whn i thought i O'd my bobbs got real big and full but after acouple of days went back down to normal. Could this mean anything?

Do you think i could of O'd later in my cycle? or is it just a weird cycle?

Has anyone had anything like this and got a BFP? or am i just kidding myself and should just wait for AF to arrive?

My cycles since iud/merina removal have been 25, 33, 29, 31 and 32+(today), days long.