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I took Regestrone but my period is 35 days late. What now?

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

Patient's Query

Hi doctor,

I have a 3-year-old child. Now I want to avoid unplanned pregnancy. Usually, mine is a 27-day cycle. I got my last period 35 days ago. Till now, I have not got the period. I have not done any pregnancy tests.

I started taking Regestrone tablets from last week for two days (morning and night, one pill each) still, my periods did not start. But I am having period pain. What to do?

Please help.
Answered by Dr. Poonguzhali Liston

Education:

MS

Professional Bio:

Dr. Poonguzhali Liston is a skilled Obstetrician and Gynecologist specializing in comprehensive women’s health care, including high-risk pregnancies, infertility, and minimally invasive gynecological surgeries. She is experienced in prenatal care, childbirth, and managing reproductive health disorders. Dr. Liston is committed to providing compassionate, personalized care focused on enhancing women’s health and well-being at every stage of life through evidence-based and patient-centered treatment.    

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Hi,

Welcome to icliniq.com.

I understand your concern.

Firstly, Regestrone (Norethisterone) has to be taken for five days twice or thrice daily. A lesser dose may not help to induce your period. The lesser dose may be the cause of your delayed period.

Secondly, even after completion of dosage, it takes about 7 to 10 days to start.

Thirdly as you have not taken a pregnancy test, I would suggest you kindly do that. If it is negative kindly revert. Also, kindly revert to the contraceptive option.

Regards.

Patient's Query

Hi doctor,

Thanks for the reply.

Just now, I tested with the pregnancy test kit, and it shows negative only. I have a doubt. I took two Regestrone tablets. Would that be a reason for the negative pregnancy result?

Answered by Dr. Poonguzhali Liston

Education:

MS

Professional Bio:

Dr. Poonguzhali Liston is a skilled Obstetrician and Gynecologist specializing in comprehensive women’s health care, including high-risk pregnancies, infertility, and minimally invasive gynecological surgeries. She is experienced in prenatal care, childbirth, and managing reproductive health disorders. Dr. Liston is committed to providing compassionate, personalized care focused on enhancing women’s health and well-being at every stage of life through evidence-based and patient-centered treatment.    

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

Consult other doctors in the same speciality

Hi,

Welcome back to icliniq.com.

Do not worry. Regestrone does not interfere with a pregnancy test. Urine pregnancy test measures hCG (human chorionic gonadotropin) hormone different from Progesterone (Regestrone). So the result is very reliable. So now, stay stress-free. Your period should come in a few days.

Once you start menstruating, you can decide on the contraception you want to avoid unwanted pregnancy. Any doubt or query kindly get back to me. Stay safe. Regards.

Medically reviewed by iCliniq medical review team
Published At May 26, 2021
Reviewed At July 31, 2025

Education:

MS

Professional Bio:

Dr. Poonguzhali Liston is a skilled Obstetrician and Gynecologist specializing in comprehensive women’s health care, including high-risk pregnancies, infertility, and minimally invasive gynecological surgeries. She is experienced in prenatal care, childbirth, and managing reproductive health disorders. Dr. Liston is committed to providing compassionate, personalized care focused on enhancing women’s health and well-being at every stage of life through evidence-based and patient-centered treatment.    

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

Consult other doctors in the same speciality

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Dr. Poonguzhali Liston

Obstetrics and Gynecology

Consult this doctor

Education:

MS

Professional Bio:

Dr. Poonguzhali Liston is a skilled Obstetrician and Gynecologist specializing in comprehensive women’s health care, including high-risk pregnancies, infertility, and minimally invasive gynecological surgeries. She is experienced in prenatal care, childbirth, and managing reproductive health disorders. Dr. Liston is committed to providing compassionate, personalized care focused on enhancing women’s health and well-being at every stage of life through evidence-based and patient-centered treatment.    

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

Consult other doctors in the same speciality
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