Common Questions About Taking Emergency Contraceptive Pills - Obstetrics and Gynecology

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Hello, doctor.
I have been taking the German contraceptive pill, YAZ, for about 9-10 months.
I usually start taking it on the fifth day of my menstrual cycle, and my period typically starts four days after taking the last pill.
Last month, I wanted to delay my period by two days, so I took the pill for an extra two days.
This month, I mistakenly started taking it from the fourth day, but I only took 26 pills.
If I miss the last two pills, Q1: Is there a possibility of pregnancy? Q2: Should I start taking it again on the fifth day next month?

Niming, 20~29 year old female. Ask Date: 2019/12/15

Dr. Huang Jianzhong reply Obstetrics and Gynecology


I have been taking the German contraceptive pill for 9-10 months.
I usually start taking it on the fifth day of my menstrual cycle, and my period typically arrives four days after taking the last pill.
Last month, I wanted to delay my period by two days, so I took the pill for an additional two days.
This month, I mistakenly started taking it on the fourth day, but I only took 26 pills.
If I miss the last two pills, Q1: Is there a possibility of pregnancy? Ans: There is no possibility of pregnancy.
Q2: Should I start taking it again on the fifth day next month? Ans: Yes.

Reply Date: 2019/12/15

More Info


When it comes to emergency contraceptive pills (ECPs), there are several common questions and concerns that individuals may have, especially regarding their usage, effectiveness, and potential side effects. Based on your situation, let’s address your specific questions while also providing some general information about ECPs.


Understanding Emergency Contraceptive Pills (ECPs)
ECPs are designed to prevent pregnancy after unprotected intercourse or contraceptive failure (e.g., a broken condom). They work primarily by delaying ovulation, which means they prevent the release of an egg from the ovary. There are different types of ECPs, including those containing levonorgestrel and ulipristal acetate. It's important to note that ECPs are most effective when taken as soon as possible after unprotected intercourse, ideally within 72 hours for levonorgestrel and up to 120 hours for ulipristal acetate.


Your Specific Questions
Q1: If I missed taking the last two pills of my contraceptive pack, is there a possibility of pregnancy?
If you have been consistently taking your contraceptive pills as directed for the past 9-10 months, your risk of pregnancy remains low, even if you missed the last two pills. Most combination oral contraceptives (which include both estrogen and progestin) provide effective contraception as long as they are taken correctly. However, missing pills can reduce their effectiveness, especially if you miss pills during the last week of your pack, as this is when you are typically most vulnerable to ovulation.

If you missed the last two pills of your pack, it is advisable to take them as soon as you remember. If you have missed more than one pill, you should follow the instructions provided with your specific contraceptive brand regarding missed pills. If you had unprotected intercourse during the time you missed your pills, there is a slight chance of pregnancy, and you may want to consider taking an emergency contraceptive pill as a precaution.

Q2: Should I continue taking my pills starting from the fifth day of my next cycle?
Yes, you should continue taking your contraceptive pills as per your usual schedule. If your cycle starts as expected, you can resume taking your pills on the fifth day as you have been doing. It’s important to maintain a consistent schedule to ensure the effectiveness of the contraceptive. If you have any doubts about your cycle or the effectiveness of your contraceptive method, consider consulting with your healthcare provider for personalized advice.


Additional Considerations
1. Side Effects: ECPs can cause side effects such as nausea, fatigue, headache, and changes in your menstrual cycle. If you experience severe side effects or if your menstrual cycle is significantly delayed after taking ECPs, consult your healthcare provider.

2. Regular Check-ups: Regular gynecological check-ups are important to monitor your reproductive health and discuss any concerns regarding contraceptive methods.

3. Alternative Contraceptive Methods: If you find that you are frequently needing to adjust your contraceptive schedule or are concerned about missed pills, you might want to discuss alternative contraceptive methods with your healthcare provider. Options include long-acting reversible contraceptives (LARCs) like IUDs or implants, which can provide effective contraception without the need for daily attention.

4. Emergency Contraceptive Availability: If you ever find yourself in a situation where you need emergency contraception, remember that ECPs are available over-the-counter in many places, and you can access them without a prescription.

In conclusion, while missing pills can pose a risk, your long-term use of contraceptives suggests that your risk of pregnancy remains low. Always consult with your healthcare provider for tailored advice and to address any concerns you may have regarding your contraceptive method.

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