How Soon Can You Expect Your Period After Taking Birth Control Pills? - Obstetrics and Gynecology

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How many days after taking the emergency contraceptive pill will menstruation occur?


Hello Doctor, I gave birth a little over a month ago (January 30, 2016).
Since I am considering having a second child, I have chosen to take birth control pills.
I am currently using the YAZ oral contraceptive.
I took my last pill last night (March 29, 2016), and I haven't gotten my period this morning.
Is this normal? (Today's date is March 30, 2016).
I obtained the birth control pills from my obstetrician-gynecologist, who only reminded me that it is normal to experience some bleeding while taking the pills and to continue taking them.
I forgot to ask if I should start taking the pills immediately after my period ends on the fifth day or if I should wait a few days.

Lucia, 20~29 year old female. Ask Date: 2016/03/30

Dr. Cao Guotao reply Obstetrics and Gynecology


Hello, after finishing a 21-day course of oral contraceptives, menstruation typically occurs within about 3 days.
If you are using a 28-pill pack, menstruation will usually start during the last few pills.
After your period starts, continue taking the next pack of oral contraceptives on the fifth day.
Wishing you good health!

Reply Date: 2016/03/30

More Info


After giving birth, many women have questions about their menstrual cycle, especially when starting birth control pills. The timing of your first period after childbirth can vary significantly based on several factors, including whether you are breastfeeding, the type of birth control you are using, and your individual hormonal balance.

When you start taking birth control pills, particularly combination pills like the one you mentioned (悦己), it is common for your body to take some time to adjust. Many women experience irregular bleeding or spotting during the first few months of taking the pill, which is often referred to as "breakthrough bleeding." This is a normal response as your body adapts to the hormones in the pills.

In your case, since you are one month postpartum and have just started taking the birth control pills, it is not unusual for your period to be delayed. The hormones in the pills can suppress ovulation and alter the normal menstrual cycle. If you have taken the pills consistently as directed, you may not experience a period right away. Some women may not get their first period until they have completed the first pack of pills, while others may experience withdrawal bleeding during the placebo week (the last week of the pill pack, where you typically take inactive pills).

If you are concerned about the timing of your period or if you experience any unusual symptoms, such as severe pain or heavy bleeding, it is advisable to consult your healthcare provider. They can provide personalized guidance based on your health history and current situation.

In general, here are some additional points to consider regarding postpartum menstruation and birth control:
1. Breastfeeding Impact: If you are breastfeeding, it can significantly affect your menstrual cycle. Many breastfeeding mothers do not get their period for several months, as breastfeeding suppresses ovulation due to elevated levels of the hormone prolactin. This is known as lactational amenorrhea. If you are exclusively breastfeeding, you may not see your period return until you start weaning or if you introduce formula.

2. Hormonal Adjustments: After childbirth, your body undergoes significant hormonal changes. It can take time for your hormones to stabilize, which can affect the timing of your menstrual cycle. The introduction of birth control pills adds another layer of hormonal influence, which can further delay your period.

3. Monitoring Your Cycle: Keep track of your cycle and any bleeding patterns you experience while on the pill. This information can be helpful for discussions with your healthcare provider if you have concerns.

4. Consulting Your Doctor: If you have any doubts about the effectiveness of your birth control or if you suspect you might be pregnant (especially if you missed a pill), it is essential to take a pregnancy test and consult your healthcare provider for further advice.

5. Expectations with Birth Control: Understand that while birth control pills are effective in preventing pregnancy, they do not provide immediate protection against sexually transmitted infections (STIs). If you are considering resuming sexual activity, discuss additional protection methods with your healthcare provider.

In summary, it is normal for your period to be delayed after starting birth control pills postpartum. If you have taken the pills correctly and are not experiencing any concerning symptoms, it is likely just a matter of time before your cycle regulates. Always feel free to reach out to your healthcare provider for personalized advice and reassurance.

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Hello, usually after finishing a course of oral contraceptives, menstruation should occur within a week. If your period is more than a week late, it is advisable to consult a gynecologist. Wishing you good health.

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Hello, if you are taking a 21-day birth control pill, you will typically get your period about 3 days after stopping the medication. If you are on a 28-day pill, your period usually starts around the time you have 3 pills left. Wishing you good health!

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