Q. Other than PCOD, what are the other reasons for irregular and late periods?

Answered by
Dr. Manwani Saloni Dilip
and medically reviewed by iCliniq medical review team.
This is a premium question & answer published on Mar 27, 2022

Hi doctor,

My period is late for 20 days. I am having mild back pain, breast tenderness, and diarrhea. I have a history of irregular periods, but I will mostly get it between the 25th and 35th day. I do not have PCOD.

I underwent blood tests and ultrasound a few months back, and the results were good. No medical conditions were detected.

I only take tablet Paracetamol and tablet Ibuprofen and no other medications.



Welcome to

First, I would like to know if you are sexually active, and in that case, I suggest you get a urine pregnancy test done.

If not sexually active or if the pregnancy test is negative, the delay is mainly because the cycle is an anovulatory one. Anovulatory cycles are commonly caused by hormonal disturbances, which can be due to changes in diet and lifestyle, too much stress, thyroid disease, or polycystic ovarian disease (PCOD). You are currently getting premenstrual symptoms, so your periods should start in a few days. If the ultrasound and blood tests are more than six months old, I suggest you repeat them. You currently do not need medicines for your periods to start. I suggest you wait for a week.


Hi doctor,

Thanks for your reply.

I am sexually active, and I took a urine test and a blood test; both came back negative. I have been having these premenstrual symptoms for a week now, but still, I did not get my period. I usually get premenstrual symptoms three days before my period starts. I did a blood test less than six months back to check my hormones, and it was within the normal range.

Please help me with this.



Welcome back to

If the pregnancy test was done before a week, you could repeat the urine test one more time. You can still wait for up to 45 days for your periods to come naturally. If you do not get the periods even after 45 days, you can take progesterone tablets for withdrawal.

I suggest you take tablet Deviry (Medroxyprogesterone Acetate) 10 mg twice daily for five days (Consult with your specialist doctor, discuss with him or her and take the medicines with their consent). You will get your periods the week after completing the dose. If your hormonal levels were normal, they could be precipitated by stress or lifestyle changes.


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