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If you vomited 12 hours AFTER you ingested your pill, the pill was properly absorbed into the body (typically this occurs under 2 hours) so you should not need emergency contraception
Ah... yes it does =) so 45 minutes is not enough time to full digest and absorb the pill... so yes, you will need to use emergency contraception such as plan B within 72 hours of having intercourse. I would also check a pregnancy test 1-2 weeks AFTER the start of your next period to know 100% you are in the clear