Can my repeated emergency pill use cause delayed periods?

Question

Hello doctor,

I took the I-pill twice in the past two months, once each month. Last month, I noticed that my periods became very light and lasted only about two days. This month, I had protected intercourse and have not taken any emergency pills until recently. However, this month my period is delayed, and I am a bit concerned.

Could you please advise on what I should do next?
Can the emergency pill cause a missed period?

Kindly advise.

Answer 1

Hello,

Welcome to icliniq.com.

I understand the concern.

Yes, emergency contraceptive pills such as Levonorgestrel can definitely disturb the menstrual cycle. They often cause lighter, shorter, earlier, or delayed bleeding because of the sudden high dose of hormones. Taking it repeatedly within a couple of months can make the cycle even more unpredictable.

Since protected intercourse occurred this time, the chance of pregnancy is very low. The delayed period is most likely due to the hormonal effect of Levonorgestrel and temporary cycle disturbance rather than pregnancy.

I would recommend the following investigations:

Perform a urine pregnancy test if the period is delayed by more than 10 days.
If cycles remain irregular for the next two to three months, consider the following tests:

Thyroid-stimulating hormone (TSH).
Serum prolactin.
Luteinizing hormone (LH) and follicle-stimulating hormone (FSH).
Pelvic ultrasound scan.

The other conditions that need to be ruled out include:

Stress-related menstrual delay.
Polycystic ovarian changes.
Early pregnancy.

I would suggest the following measures:

At present, observation is sufficient. A home urine pregnancy test should be done for confirmation.
Emergency contraceptive pills such as Levonorgestrel should not be used repeatedly, as they are meant only for occasional emergency use.
For ongoing contraception, it is advisable to shift to a safer and regular method, such as combined oral contraceptive pills (OCPs) or barrier methods.
If menstruation does not occur within six to eight weeks, an in-person consultation is recommended.

Perform a urine pregnancy test and review the result. If negative, wait for the menstrual cycle. If irregularity continues over the next few months, follow up with the investigation reports for further guidance.

Preventive measures include:

Avoid repeated use of emergency contraceptive pills.
Maintain a healthy weight, adequate sleep, and a balanced diet to support regular menstrual cycles.
Use consistent contraception to prevent anxiety and hormonal disturbances.

I hope you are satisfied with my answer. For further queries, you can consult me at iCliniq.

Thank you.