How long does Plan B mess up your period!!!

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Had plan B 3 months ago. Had a 12 day cycle after taking, had a 25 day cycle, 31 day cycle, and today is day 32 of no period. I don’t think I’m pregnant (haven’t had intercource but i guess extremely slim chance from oral sex possible ejaculated near me??? but i don’t even know if that’s possible) and my cycles are usually quite short so 32 days is super weird for me. Any help?!?!?!