Whats going on? Spotting 4 dpo

JEN💕 • 👦13yrs, 👧11yrs, 👶💕1yr &🤰

My LMP was 08/10- 08/12 my ovulation date was monday 08/24 confirm with opk, that was the last day i took my mini pill... today 08/28 am spotting, am soo lost... what do you guys think is going on.