A 28-year-old female asked:
Disclaimer

if i begin a new pack of birth control pills for the first time a week or two before my period how will it affect my period?

1 doctor answer
Dr. Roger Sherman
22 years experience Obstetrics and Gynecology
Lighter vs absent: Your period will likely be absent vs lighter and you will potentially have some irregular bleeding over the next several months. The reason for waiting until your next period to start is to insure that you are not pregnant. If you are certain this is not the case, you can go ahead and start the pills now.
Answered on Jul 21, 2015

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