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What are the effects of oral contraceptive on menstrual cycle?

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

Patient's Query

Hi doctor,

I had an oral contraceptive pill three months back, which caused a three-week delay in my periods, and my cycle was for only 3 days compared to the normal 5 days. After that, we have not had sex. I still have not gotten my period of this month, which is due.

I feel puckish and dizzy most of the day. I tried the home pregnancy test, and the results are negative. What do you think? I have a thyroid problem and recently changed my dose from 100 mcg to 75 mcg.

Please help.
Answered by Dr. Pooja Pardhi

Education:

MBBS

Professional Bio:

Dr. Pooja Pardhi is a General Physician and General Practitioner for 15 years. She completed MBBS from Government Medical College, Nagpur, in 2009 . She is also an expert in Internal Medicine. She consults patients at home, monitoring patients' conditions and wellbeing. She diagnoses and treats illnesses or ailments, does minor surgeries, and carries out tests to diagnose the condition. She is currently practicing in Mumbai.

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

Consult other doctors in the same speciality

Hi,

Welcome to icliniq.com.

I have gone through your query and can understand your health concern. If you have taken the oral contraceptive pill within 72 hours of sex, then no need to worry. As you got your periods after that though they are delayed there is nothing to worry. As you have mentioned that you have thyroid problem also, I think it is due to hormonal imbalance as thyroid problems can also cause irregular menses.

Your symptoms can be due to PMS (premenstrual syndrome). Still, I suggest you to check your serum beta hCG (human chorionic gonadotropin) levels to make sure that there is no pregnancy. I suggest you to consult a gynecologist if serum beta hCG comes to be high and periods get delayed further.

Medically reviewed by iCliniq medical review team
Published At November 30, 2016
Reviewed At December 30, 2025

Education:

MBBS

Professional Bio:

Dr. Pooja Pardhi is a General Physician and General Practitioner for 15 years. She completed MBBS from Government Medical College, Nagpur, in 2009 . She is also an expert in Internal Medicine. She consults patients at home, monitoring patients' conditions and wellbeing. She diagnoses and treats illnesses or ailments, does minor surgeries, and carries out tests to diagnose the condition. She is currently practicing in Mumbai.

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

Consult other doctors in the same speciality

Same symptoms don't mean you have the same problem. Consult a doctor now!

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Companion

Oral Contraceptive Menstrual Cycle Companion

How it works

Oral contraceptive pills (OCPs) can influence your menstrual cycle in various ways. It is also important to consider other factors like thyroid health and premenstrual syndrome (PMS).

1

Oral
Contraceptive

2

Cycle
Changes

3

Thyroid
Link

4

PMS
Symptoms

5

Pregnancy
Test

6

Doctor
Consult

This information is based on general medical guidance. It is not a substitute for professional medical advice; consult a qualified clinician.

Always consult a doctor before taking medication; self-medication carries serious health risks. Take exact prescribed doses, and never start, change, or stop treatment without medical supervision.
Dr. Pooja Pardhi
Dr. Pooja Pardhi

Internal Medicine

Consult this doctor

Education:

MBBS

Professional Bio:

Dr. Pooja Pardhi is a General Physician and General Practitioner for 15 years. She completed MBBS from Government Medical College, Nagpur, in 2009 . She is also an expert in Internal Medicine. She consults patients at home, monitoring patients' conditions and wellbeing. She diagnoses and treats illnesses or ailments, does minor surgeries, and carries out tests to diagnose the condition. She is currently practicing in Mumbai.

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

Consult other doctors in the same speciality
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