ECP, Obstetrics and Gynecology FAQ

Can Birth Control Pills Work with Irregular Menstrual Cycles?

Irregular menstruation, but I want to take oral contraceptives for birth control? If you have an irregular menstrual cycle and your period comes only once every 1 to 2 months, it's important to understand how to use emergency contraception effectively. Typically, emergency c...

Dr. Chen Zhiyu Reply:
Hello, it is recommended to visit the obstetrics and gynecology outpatient clinic for consultation and evaluation. Thank you.

Understanding Pregnancy Risks: Timing and Emergency Contraception Explained

Can I get pregnant? Your girlfriend's menstrual period started on April 19 and lasted for seven days, ending on April 25. You had intimate contact on the evening of April 29, which was four days after her period ended. You had unprotected intercourse for less than a minute a...

Dr. Zhang Kunmin Reply:
Hello, the failure rate of condoms as a contraceptive method is over 5%, which is less reliable compared to other methods. It is best to use emergency contraception as a remedy, but its effectiveness is not 100%, with a failure rate of about 3%. It is recommended to check for pre...

Understanding Pregnancy Chances with PCOS: Key Factors and Insights

The probability of pregnancy in women with polycystic ovary syndrome (PCOS)? Your girlfriend has polycystic ovary syndrome (PCOS). Her last menstrual cycle was 25 days, from October 28 to November 3, and this time it was 31 days, from November 27 to December 3. On December 3, you...

Dr. Wu Xianghui Reply:
1. For pregnancy concerns, please take a home pregnancy test or consult a gynecologist for evaluation four weeks after sexual intercourse. 2. Polycystic Ovary Syndrome (PCOS) refers to a condition in women characterized by irregular ovulation frequency; it does not mean difficult...

Understanding Emergency Contraception and Its Effects on Menstrual Cycle

Two days after the end of menstruation, I had unprotected intercourse and have questions about using emergency contraception? Regarding your question, your girlfriend's menstrual cycle is typically 37 to 39 days, with her last period occurring from December 8 to December 12....

Dr. Zhang Kunmin Reply:
Hello, the effects of emergency contraceptive pills on menstruation can vary; they may cause your period to come early or late. Additionally, their contraceptive effectiveness is not 100%, with a failure rate of about 3%. Vaginal bleeding cannot solely be used to determine if it ...

Understanding Emergency Contraception and Its Effects on Menstrual Cycle

Contraceptive pill issues 1. The bleeding you experienced on June 23 could be due to the hormonal changes caused by the emergency contraceptive pill (ECP) taken after the intercourse on June 18 and June 20. Spotting can occur as a side effect of ECPs, but it is important to monit...

Dr. Huang Jianzhong Reply:
On June 18 and June 20, there was sexual intercourse (ejaculation inside), and emergency contraception was taken immediately. June 19 was the ovulation period. On June 21 and June 22, there was again sexual intercourse (ejaculation inside), but no emergency contraception was take...

Understanding Pregnancy Tests: Accuracy and Timing Explained

Pregnancy test questions. Thank you? I apologize for any inconvenience caused by my previous response not being visible. I would like to clarify your questions regarding pregnancy testing and emergency contraception. You mentioned that your last menstrual period was from June 27...

Dr. Huang Jianzhong Reply:
1. You can test for pregnancy as early as 14 days after sexual intercourse. However, while testing on that day can provide an indication, it is not 100% accurate. 2. You took an emergency contraceptive pill (Plan B) two hours after intercourse and tested for pregnancy seven day...

Concerns About Pregnancy Risks After Unprotected Sex: What to Do?

Concern about pregnancy during the fertile window? Your menstrual period started on April 18 and ended on April 24. You had protected intercourse on April 28 using a condom, and ejaculation occurred inside the condom. On April 29, you engaged in unprotected intercourse for about ...

Dr. Zhang Kunmin Reply:
Hello, the questioner: There is a possibility of pregnancy even if ejaculation has not occurred during intercourse, as pre-ejaculatory fluid may contain sperm. Additionally, the failure rate of using condoms throughout intercourse is over 5%. It is recommended to use emergency co...

Does Eating After Taking Emergency Contraceptive Pills Affect Their Effectiveness?

Emergency contraceptive pill Taking emergency contraceptive pills (ECPs) and then eating about 10 minutes later generally does not affect the efficacy of the medication. ECPs are designed to be effective regardless of food intake shortly after ingestion. However, if you experienc...

Dr. Cao Guotao Reply:
Hello, it does not affect the efficacy of the medication, so you can rest assured. It is best to take preventive measures before engaging in sexual activity. Wishing you good health.

Understanding the Risks and Effects of Emergency Contraceptive Pills

Emergency contraceptive pill Taking emergency contraceptive pills (ECPs) 2 to 3 times within a month can lead to several issues. While ECPs are effective in preventing pregnancy when taken as directed, frequent use may result in side effects such as nausea, fatigue, headache, diz...

Dr. Cao Guotao Reply:
Hello, emergency contraceptive pills can sometimes cause irregular menstruation, but they generally do not have significant side effects. It is best to use preventive measures beforehand. Wishing you good health.

Understanding the Risks and Effects of Emergency Contraceptive Pills

Dr. Cao Guotao Reply:
Hello, emergency contraceptive pills can sometimes cause irregular menstruation. The effectiveness of emergency contraception is about 90%, so it is best to use preventive measures beforehand. Wishing you good health.

Understanding the Risks of Repeated Use of Emergency Contraceptive Pills

Emergency contraceptive pill Taking emergency contraception pills (ECPs) 2 to 3 times within a month can lead to several issues. While ECPs are effective in preventing pregnancy when taken as directed after unprotected intercourse, frequent use may cause irregular menstrual cycle...

What to Do If You Missed Taking Emergency Contraception After Unprotected Sex

Emergency contraception If you had unprotected intercourse and are concerned about pregnancy, it's important to consider taking emergency contraception as soon as possible. Since it has been two days since the incident, you still have options. Emergency contraceptive pills (...

Dr. Zhang Kunmin Reply:
What you need is not medical consultation but rather a remedial course in sexual education. For such inquiries, it is recommended to refer to the National Health Administration's "Sexual Wellness e-Learning" or the Obstetrics and Gynecology Society's "Con...

Understanding Birth Control Pills: How to Use Them Effectively

Contraceptive pill usage Before engaging in sexual intercourse, it's important to understand how emergency contraception works. Many articles suggest that emergency contraceptive pills (ECPs) should be taken within a few days after unprotected sex, while some friends may say...

Dr. Lin Manying Reply:
What you need is not medical consultation but rather a refresher on sexual health knowledge. For such questions, it is recommended to refer to the National Health Administration's "Sexual Health e-Learning Platform" or the Obstetrics and Gynecology Society's &...

Effects of Taking Emergency Contraceptive Pills Twice in One Month on Future Fertility

Taking emergency contraception twice within a month? Taking emergency contraception twice within a month is generally considered safe and should not have a long-term impact on your fertility or ability to conceive in the future. Emergency contraceptive pills (ECPs) are designed f...

Dr. Cao Guotao Reply:
Hello, generally it will not affect future childbirth. It is better to take contraceptive measures "before" sexual activity, as post-coital contraception is less effective. Wishing you good health.

Effects of Taking Emergency Contraceptive Pills Twice in One Month

Taking emergency contraception twice within a month? Taking emergency contraception twice within a month generally does not have long-term effects on fertility or the ability to conceive in the future. Emergency contraceptive pills (ECPs) are designed for occasional use and are n...

Effectiveness of Emergency Contraceptive Pills Taken After 72 Hours

Questions about contraception? The efficacy of emergency contraceptive pills (ECPs) taken within three days after unprotected intercourse is approximately 75-89%. If taken within 72 hours, the effectiveness is highest, but it decreases over time. After three days, the effectivene...

Dr. Zhang Kunmin Reply:
Hello, the effectiveness of emergency contraceptive pills taken within three days is approximately 97%. The effectiveness decreases over time, with studies in Canada showing around 90% effectiveness when taken between 3 to 5 days. There is currently no data on effectiveness beyon...

Understanding Emergency Contraception and Pregnancy Concerns

Contraceptive concerns? 1. Hello, my girlfriend and I had intercourse, and on the same day, she took the emergency contraceptive pill. Since there was only one pack with three pills, she took all three at once, less than an hour apart. Is this effective? I heard that the pills sh...

Dr. Yang Wangjun Reply:
Hello: 1. Emergency contraception primarily works by preventing the implantation of a fertilized egg. Therefore, medications or the insertion of an intrauterine device (IUD) are effective when used within 72 hours after intercourse. Emergency contraceptive pills (ECPs) may cont...

Understanding Emergency Contraceptive Pills: Ingredients and Effects on Future Pregnancy

Emergency contraceptive pill Emergency contraceptive pills (ECPs) typically contain one of two active ingredients: levonorgestrel or ulipristal acetate. If a woman takes ECPs and subsequently gets her menstrual period, it generally does not affect the ability to conceive through ...

Dr. Huang Jianxun Reply:
Hello: The so-called emergency contraceptive pill refers to taking a dose that is four to six times higher than that of regular contraceptive pills within 72 hours. Different contraceptive pills contain varying amounts of progestin and estrogen, so the dosage and frequency of adm...

Understanding the Differences Between 12-Hour and 24-Hour Emergency Contraceptive Pills

A postcoital contraceptive pill that is taken once every 24 hours?! The difference between taking emergency contraceptive pills (ECPs) every 12 hours versus every 24 hours lies in the timing and effectiveness of the medication. ECPs are most effective when taken as soon as possib...

Dr. Lü Lizheng Reply:
The difference between taking birth control pills every 12 hours versus every 24 hours lies in the dosage and formulation of the medication. Generally, pills taken every 12 hours may have different dosages and formulations compared to those taken once every 24 hours. Sincerely, L...