Emergency Contraception for PCOS Patients on Birth Control - Obstetrics and Gynecology

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Preconception contraception


I have polycystic ovary syndrome and have been taking Diane contraceptive pills for two years.
This month, I reached the seventh day of taking the pills and accidentally had unprotected intercourse.
I would like to know if I am still protected against pregnancy and if I need to consider taking emergency contraception.
Should I also visit a clinic for an examination?

kiwi, 10~19 year old female. Ask Date: 2017/08/25

Dr. Huang Jianzhong reply Obstetrics and Gynecology


You have polycystic ovary syndrome and have been taking Diane contraceptive pills for two years.
This month, you reached the seventh day of your pill cycle and accidentally had unprotected intercourse.
You are inquiring whether there is contraceptive effectiveness in this situation and if you need to use emergency contraception or visit a clinic for an examination.

Answer: There is contraceptive effectiveness, and you do not need to use emergency contraception.
There is no need to visit a clinic for an examination.

Reply Date: 2017/08/25

More Info


Emergency contraception (EC) is a crucial topic for individuals with Polycystic Ovary Syndrome (PCOS) who are on birth control, such as the birth control pill Diane (commonly known as "Diane-35" or "Diane"). Understanding how these medications work and the implications of missed doses or unprotected intercourse is essential for effective family planning.

First, it's important to recognize that birth control pills like Diane are designed to prevent ovulation, thicken cervical mucus, and thin the uterine lining, thereby reducing the chances of pregnancy. When taken consistently and correctly, these pills are highly effective, with a failure rate of less than 1% per year. However, the effectiveness can be compromised if pills are missed or taken irregularly.

In your case, you mentioned that you are on the seventh day of your pill regimen and experienced unprotected intercourse. If you have been taking your birth control pills as directed (i.e., at the same time every day without missing any doses), the likelihood of pregnancy is significantly reduced, even with internal ejaculation. The hormonal levels maintained by the pill should still be effective in preventing ovulation during this time.

However, if you missed any doses in the previous week or if you have not been taking your pills consistently, the risk of pregnancy increases. In such scenarios, emergency contraception may be considered. Emergency contraception pills (ECPs), such as Plan B (levonorgestrel) or Ella (ulipristal acetate), can be taken after unprotected intercourse to prevent pregnancy. These pills are most effective when taken as soon as possible after the incident, ideally within 72 to 120 hours, depending on the type of pill.

Regarding your question about whether you need to visit a clinic for a check-up, it largely depends on your specific situation. If you have been consistent with your birth control and are not experiencing any unusual symptoms (such as severe abdominal pain, unusual bleeding, or other signs of pregnancy), a visit may not be necessary. However, if you are feeling uncertain or anxious about the situation, it is always a good idea to consult with your healthcare provider. They can offer personalized advice, perform a pregnancy test if needed, and discuss your options moving forward.

Additionally, for individuals with PCOS, it is essential to maintain regular check-ups with a healthcare provider to monitor the condition and manage any associated symptoms effectively. PCOS can affect menstrual cycles and ovulation, which may complicate the use of hormonal contraceptives. Therefore, discussing your contraceptive options and any concerns about your menstrual health with your doctor can help ensure that you are using the most effective method for your needs.

In summary, if you have been taking your Diane birth control pills consistently, the risk of pregnancy from the incident you described is low. However, if you have missed doses or are unsure about your pill-taking routine, consider using emergency contraception and consult with your healthcare provider for further guidance. Regular monitoring and open communication with your doctor will help you manage your PCOS and reproductive health effectively.

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