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A member asked:
Normally, how long would the birth control pill take to be effective in the 3rd cycle?
A doctor has provided 1 answer
It is effective: Once a woman finishes her first pack of birth control pills she is protected and no longer needs to use a backup method of birth control. By the second and third pack the birth control pill is fully effective and no backup is needed.
Answered 1/3/2016
5.2k views
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