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When does menstrual bleeding resume after taking ECP?

This Premium Q&A, reviewed and published, features a real conversation between an iCliniq user and a physician.

Patient's Query

Hello doctor,

My girlfriend took Unwanted 72 on the same day of sexual intercourse. She had thick and fleshy bleeding for three days, starting from 15 days earlier than her usual period date of the month. It has been 33 days since that bleeding, but her period has still not started yet.

When will she get her period?

Kindly help.

Thank you.

Answered by Dr. Ali Osman

Education:

MBBS

Professional Bio:

Dr. Ali Osman is a dedicated obstetrics and gynecology specialist committed to providing compassionate and comprehensive care for women at every stage of life. He has experience in managing a wide range of women’s health concerns, including pregnancy care, menstrual disorders, reproductive health, and gynecological conditions. Dr. Osman focuses on patient education, preventive care, and personalized treatment plans to ensure the best possible outcomes. Known for his supportive and professional approach, he strives to create a comfortable environment where patients feel heard, respected, and confident in their healthcare journey.      

This doctor is not available for online consultations on the platform anymore.

Hello,

Welcome to icliniq.com.

I read your query and understood your concern.

Let me explain to you that this Unwanted emergency contraceptive may cause irregular menstrual bleeding.

There is a possibility that the bleeding she had was period bleeding. However, I would suggest you do a urine pregnancy test. If it is not positive, then we will give oral contraceptive pills that will treat irregular menstrual bleeding.

According to the FIGO (International Federation of Gynecology and Obstetrics) classification of abnormal uterine bleeding:

Frequency:

  1. Absent: Amenorrhea.

  2. Frequent: When the cycle length is less than 24 days.

  3. Normal: When the cycle length is between 24 and 38 days.

  4. Infrequent: When the cycle length is more than 38 days.

Duration:

  1. Normal duration: Bleeding that continues up to eight days.

  2. Prolonged duration: Bleeding lasting more than eight days.

Regularity:

  1. Regular: variation between the shortest and longest cycle is less than nine days.

  2. Irregular: variation between the shortest and longest cycle is more than ten days.

Flow:

  1. Normal.

  2. Light.

  3. Heavy.

So, according to this FIGO classification, her cycle is irregular.

I advise her to do the following investigations:

  1. Urine pregnancy test.

  2. Thyroid function test.

  3. Follicle-stimulating hormone and luteinizing hormone.

If the pregnancy test is negative, I advise you to take a tablet of Dydrogesterone 10 milligrams, one tablet in the morning and one tablet at night for 21 days.

I hope that this answers your query.

Kindly follow up if you have more doubts.

Thank you.

Answered by Dr. Ali Osman
Medically reviewed by iCliniq medical review team
Published At January 19, 2026
Reviewed At January 20, 2026

Education:

MBBS

Professional Bio:

Dr. Ali Osman is a dedicated obstetrics and gynecology specialist committed to providing compassionate and comprehensive care for women at every stage of life. He has experience in managing a wide range of women’s health concerns, including pregnancy care, menstrual disorders, reproductive health, and gynecological conditions. Dr. Osman focuses on patient education, preventive care, and personalized treatment plans to ensure the best possible outcomes. Known for his supportive and professional approach, he strives to create a comfortable environment where patients feel heard, respected, and confident in their healthcare journey.      

This doctor is not available for online consultations on the platform anymore.

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Concerned about your period after ECP?

Five quick questions help you understand if your menstrual changes after emergency contraception are typical, or if you should mention them to your doctor.

Private and judgment-free. For guidance only, not a diagnosis.

Education:

MBBS

Professional Bio:

Dr. Ali Osman is a dedicated obstetrics and gynecology specialist committed to providing compassionate and comprehensive care for women at every stage of life. He has experience in managing a wide range of women’s health concerns, including pregnancy care, menstrual disorders, reproductive health, and gynecological conditions. Dr. Osman focuses on patient education, preventive care, and personalized treatment plans to ensure the best possible outcomes. Known for his supportive and professional approach, he strives to create a comfortable environment where patients feel heard, respected, and confident in their healthcare journey.      

This doctor is not available for online consultations on the platform anymore.

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