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It would be better to continue the mini-pill for a week after the last sexual encounter. The primary effect of the mini-pill is on cervical mucus, so would be effective on the day of intercourse, but it also has an effect the lining of the uterus, which would be an issue about a week later. If you were to stop now, you would have most of the effectiveness of the mini-pill, but if you want the maximal effectiveness, it would be better to continue the mini-pill for a week after that intercourse.
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