Yes, most hormonal birth control methods are not immediately effective. When first starting birth control pills, the birth control patch or the vaginal ring, it takes at least 7 days of consistent use for them to become effective. The DepoProvera injection is effective after 24 hours.
The risk of pregnancy also depends on where you are at within your menstrual cycle. If you started your pills/had unprotected sex in the middle of your cycle, this could be your “more fertile” time, and the chance of pregnancy is greater. If you started your pills/had unprotected sex immediately after your period (your less fertile time), then chance of pregnancy would be less.
Whether you are just starting your method or have been on it for a while, it is important to take your birth control correctly and consistently. If you have any further concerns, contact your doctor or clinic.
4. February 2012
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