Probably not by much: Your period is not likely to be delayed by using plan B. If there is any effect on the period is could start a day later, but then only if you took the plan B about 1 or 2 days before your period was due.
Answered 2/18/2015
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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