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 contraception commonly causes breast tenderness, breast pain, nausea, vomiting, headache, dizziness, and fatigue. Most symptoms will go away once the medication is out of your system. It does 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 contraception may experience light vaginal bleeding. This is because emergency contraception contains high levels of progestin and estrogen, which can cause bleeding. This usually stops within three days of taking the pill.

If bleeding lasts longer 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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