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A 17-year-old female asked:

I started my first pack of birth control pills (21 com. pills) one week after my period. when should i expect my period?

1 doctor answer2 doctors weighed in
Dr. Joe Merritt
Obstetrics and Gynecology 50 years experience
3 weeks : Usually periods begin when the body realizes you have stopped taking the pill. Generally about 2-3 days after the last of the 21 pills-.

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Similar questions

A 37-year-old member asked:

How do I start my second pack of birth control pills if I started taking them the first day of my period?

2 doctor answers10 doctors weighed in
Dr. Padmavati Garvey
A Verified Doctoranswered
A US doctor answeredLearn more
Just follow the pack: Just follow the pack. You should take a pill everyday.
A 31-year-old member asked:

Can i start my first pack of birth control pills without waiting for my period?

1 doctor answer2 doctors weighed in
Dr. John Rowlett
Emergency Medicine 37 years experience
Yes, but not advised: You can do this, but you still may have a cycle in the middle of the month and it is best to wait; or otherwise take the 21 active pills and then start the next month and hopefully that will regulate it, but it may take a few cycles to get 'coordinated'.
A 47-year-old member asked:

Should i worry if i started my period before finishing first pack of birth control pills?

1 doctor answer2 doctors weighed in
Dr. Edward Jacobs
Obstetrics and Gynecology 46 years experience
Probably not: It usually takes 1-2 pill cycles before your body gets used to the new hormones. Make sure you take your pill as directed at about the same time every day. Smokers should not be on the pill (they are at increased risk of stroke, especially after 40 years old). Some pills have 24 active hormone pills, others have 21. This will affect when a woman starts her period after stopping the active hormone.

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Last updated Apr 2, 2016

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