Whyyy do i always spot 9 days before A/F 😩😭

Hi everyone im just a little intrigued i know after you have a baby your body is never the same but gosh shes 2 years old now! I came off the birth control about 6 months ago it was (cerelle) this pill is supposed ti stop periods and just continuously take it, i still had monthly nornal periods on it at the same time each month and it disnt agree with me atall my moods and patience was awful so ive decided to come off it (which was 6 months ago) since then i always seem to spot like 9 days before my period not alot to stain my underwear but enough to notice when wiping and then il have a normal period is this normal for some people? Is this just my body now! 😩 I feel like i litrally have a period every 2 weeks its so annoying! Does anyone else get this?? I spot 9 days before and continue to spot until my period come its not just a day or 2 so its definitely not ovulation its really baffling me!

Thankyou all ❤️