Emergency contraceptive pill
On November 11, my period started and lasted for 6.7 days.
However, on November 22, my boyfriend penetrated me through my underwear and ejaculated after pulling out.
I read online that there are cases where pregnancy can occur even with clothing.
Therefore, on the 23rd, I bought Plan B (Levonorgestrel) and took it.
I would like to know if there is still a chance of pregnancy and how to calculate when my next period will come after taking the medication.
Haoooo, 20~29 year old female. Ask Date: 2022/11/25
Dr. Lin Lixuan reply Obstetrics and Gynecology
Hello: Using a single contraceptive method (such as consistently using condoms during intercourse, taking pre-coital contraceptive pills, or using emergency contraceptive pills) still does not guarantee 100% effectiveness in preventing pregnancy.
It is recommended that if menstruation does not occur by the expected date, you should first use a home pregnancy test.
If you have any questions, please consult a nearby obstetrics and gynecology medical facility for further advice.
Thank you.
Reply Date: 2022/11/25
More Info
Emergency contraception (EC) is a critical option for individuals who may have had unprotected intercourse or contraceptive failure. In your case, you had unprotected intercourse on November 22, and you took the emergency contraceptive pill (ECP) known as "莉潔婷" (likely referring to a brand of levonorgestrel or ulipristal acetate) shortly after. Understanding the effectiveness, risks, and potential impacts on your menstrual cycle is essential.
Effectiveness of Emergency Contraception
Emergency contraceptive pills are most effective when taken as soon as possible after unprotected intercourse. Levonorgestrel, for instance, is effective up to 72 hours after the event, while ulipristal acetate can be effective up to 120 hours. However, the sooner you take it, the better the chances of preventing pregnancy. Since you took the pill on November 23, you are within the effective window for both types of emergency contraception.
Risk of Pregnancy
While the risk of pregnancy from intercourse through clothing is generally low, it is not zero. Sperm can potentially travel through thin fabric, especially if there was pre-ejaculate fluid. However, since you took the emergency contraceptive pill shortly after the incident, the likelihood of pregnancy is significantly reduced.
Menstrual Cycle Impact
After taking emergency contraception, it is common for your menstrual cycle to be affected. The timing of your next period can vary. Some individuals may experience their next period on time, while others may have a delay or an early onset. Generally, you can expect your period to arrive within a week or two of the expected date. If your period is more than a week late, it is advisable to take a pregnancy test to confirm whether or not you are pregnant.
Side Effects and Considerations
Emergency contraception can cause side effects, including nausea, fatigue, headache, dizziness, and changes in your menstrual cycle. These side effects are typically temporary. If you experience severe abdominal pain or any unusual symptoms, it is important to consult a healthcare provider.
Conclusion
In summary, taking the emergency contraceptive pill shortly after unprotected intercourse significantly reduces the risk of pregnancy. While it can affect your menstrual cycle, you should monitor for your next period and take a pregnancy test if it is late. If you have any concerns or experience unusual symptoms, it is always best to consult with a healthcare professional for personalized advice and support.
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