Likely IB or Early AF

According to this app I’m 9dpo but I believe I’m 7-8 from my opk but I could be wrong. I’ve been spotting today for 4 hours and have since stopped. Just wondering if it’s too late in the game for it to be IB because I thought IB happens sooner than 9dpo. Just don’t wanna get my hopes up and go pee stick crazy if it’s more not likely than likely

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