IB or AF?

Only 12 dpo. AF due in 2 days.. period has always been exactly 28 days. Had slight cramps 6 and 7 dpo. Had a constant headache with dizzy and nausea spells from 9-11 dpo. Now today I am bleeding. Started earlier, a little on my underwear then when I wiped, then done for a few hours. now it's happening again. IB or AF?

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