How long do the side effects of the emergency contraceptive pill last?

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Question
Doctor, can you tell me how long the side effects of the 72h contraceptive pill last, and how does it affect the menstrual cycle a few months later? I hope you can give me some advice, thank you.
Anonymous question
Hello doctor! Please tell me about the problem of late period. On January 8, my period started and ended on January 12 to January 29. I had sex with my husband and ejaculated outside, but I was afraid of getting pregnant, so I took an emergency contraceptive pill. But now I'm 12 days late for my period, I bought test strips, tried 3 strips a few days apart but all 1 line. So what's wrong, doctor? White blood comes out a little more. Doctor help me answer. Thanks!
Anonymous question
Hello doctor, my last menstrual period was February 9 and ended on February 16, then on the afternoon of March 2 I had an outside relationship with my boyfriend just touching genitalia, no symptoms of ejaculation. But because of concern, I took 72-hour emergency contraception on the evening of 3/3. After drinking, there was a feeling of dizziness, headache and sometimes abdominal pain for the next few days, but there was no sign of bleeding. Can your doctor advise you in this case, is the contraception unsuccessful? I hope your doctor can help you. I thank you.
Anonymous question
Hello doctor. More than 1 month ago, I took emergency contraceptive pill 1 pill and in that month I missed my period 7 days. Until next month, I am still late for my period. So is it a side effect of the drug? Looking forward to consulting your doctor. Thank you.
Anonymous question
Answer
Dear friend,
The most common side effects associated with the oral contraceptive pill include: nausea, abdominal pain, fatigue, headache, dizziness, breast tenderness, menstrual changes...
Usually, the side effects will gradually disappear after a few days of stopping the drug. However, the drug can change hormones as well as cause menstrual disorders for about a month after using the drug. Your period may come earlier or later than usual. However, if the above symptoms persist and become more severe, you need to immediately seek medical attention.
Thank you for your question to Vinmec Health System. Best regards!
Pharmacist Nguyen Thi Linh - Faculty of Pharmacy - Vinmec Danang International General Hospital.

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