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Published on: 7/14/2026

What should I do if my period hasn't come in 3 months and I'm not pregnant?

Missing your period for 3 months without being pregnant is called secondary amenorrhea. Common causes include stress, thyroid issues, polycystic ovary syndrome (PCOS), excessive exercise, low body weight, or hormonal imbalances. Because prolonged absence of periods can affect bone health, fertility, and overall wellness, it's important to consult a healthcare provider to identify the underlying cause and receive appropriate treatment.

Not sure what could be causing your missed periods? Take a free, instant, online symptom check to better understand your body's signals and get personalized guidance on what to do next. It only takes a few minutes, requires no signup, and can help you feel informed and confident before speaking with a doctor—saving you time and easing uncertainty about your health.

Reviewed for medical accuracy: 07/14/2026

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Explanation

Going without your period for 3 months is a condition called amenorrhea. Even when you're not pregnant, many things can make your cycle stop. Sometimes, stress, changes in weight, or too much exercise can throw off your hormones. Your body may not have enough energy or proper hormone signals to start a new cycle. Other possible reasons include hormonal imbalances from issues like thyroid problems or conditions such as polycystic ovary syndrome (PCOS). It is important to keep track of any other symptoms you might have, like changes in your mood, sudden weight changes, or pain. A healthcare provider can check your hormone levels and overall health to see what might be causing the missed periods. If you're experiencing missed periods along with other symptoms, you can check your symptoms with a free AI-powered assessment to help identify potential causes before your appointment. They might also recommend tests like blood work or an ultrasound to look at your reproductive system. Even if you feel fine, getting a professional check-up can help you understand your body better and ensure that everything is working as it should.

(References)

  • Crosignani PG, Vegetti W. A practical guide to the diagnosis and management of amenorrhoea. Drugs. 1996 Nov;52(5):671-81. doi: 10.2165/00003495-199652050-00005. PMID: 9118817.

  • Master-Hunter T, Heiman DL. Amenorrhea: evaluation and treatment. Am Fam Physician. 2006 Apr 15;73(8):1374-82. PMID: 16669559.

  • Klein DA, Paradise SL, Reeder RM. Amenorrhea: A Systematic Approach to Diagnosis and Management. Am Fam Physician. 2019 Jul 1;100(1):39-48. PMID: 31259490.

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