Does taking emergency contraceptive pills cause delayed menstruation?

After taking emergency contraceptive pills, my period came early with body aches and fatigue. Will this affect my health? (Thu, 22 years old, Hanoi )

Reply:

Emergency contraceptive pills commonly cause breast tenderness, pain, nausea, vomiting, headache, dizziness, and fatigue. Most of these symptoms will go away once the pill is out of your system. They do not cause long-term side effects or serious complications, but should not be abused.

In some cases, emergency contraception can also affect your period. Your period may be a week early or late, but this is not dangerous. If your period is more than a week late, you should take a pregnancy test.

Some women who take emergency contraceptive pills may experience light vaginal bleeding. This is because emergency contraceptive pills contain high levels of progestin and estrogen, which can cause bleeding. This usually stops within three days of taking them.

If bleeding lasts more than three days or becomes heavy, seek medical attention.

Doctor Nguyen Thi Minh Thanh
Head of Specialist Examination Department, Hanoi Obstetrics and Gynecology Hospital

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