5 doctors weighed in:

How long do you have to be on birth control in order for it to be an effective contraceptive method?

5 doctors weighed in
Dr. Padmavati Garvey
Obstetrics & Gynecology
4 doctors agree

In brief: One pack

If you start your pill on the day that your period starts, then it works immediately.
If you do a sunday start, then it can take up to two weeks.

In brief: One pack

If you start your pill on the day that your period starts, then it works immediately.
If you do a sunday start, then it can take up to two weeks.
Dr. Padmavati Garvey
Dr. Padmavati Garvey
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