Yes, possibly: If you get your first shot within the first seven days of menstrual bleeding, no back up method is needed - it's immediately effective. If started at any other time in the menstrual cycle, use a back up method for seven days, .
Answered 3/31/2013
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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
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