Missed Periods (Amenorrhea): Causes and Tests in India
A missed period can have many causes, including pregnancy, medicines, thyroid changes or PCOS. Learn when to test, seek care and ask for an evaluation.
In this guide
When is a missed period a reason to seek care?
Amenorrhea means periods are absent or stop unexpectedly. A late period can happen for many reasons, but pregnancy should be considered whenever it is possible. The 2024 ASRM guidance says evaluation is appropriate after periods stop for more than three months in someone whose cycles were regular, or six months if they were irregular. Those are general clinical thresholds, not a reason to wait if you have worrying symptoms.
If pregnancy is possible, take a pregnancy test
A missed period can be an early sign of pregnancy. If a home test is negative but your period still does not come or you tested very early, ask a clinician whether and when to repeat it. If pregnancy is unwanted, you can ask for confidential counselling and discuss your options with a qualified service.
Know when a longer gap merits evaluation
ASRM’s 2024 committee opinion describes secondary amenorrhea as more than three months without a period after previously regular cycles, or six months after irregular cycles. A delay of even about a week in a previously regular cycle may warrant excluding pregnancy. If cycles have stopped after a procedure, birth, major illness or new medicine, mention that context sooner.
For adolescents, development and age matter too
ASRM guidance recommends assessment if a young person has not started periods by age 15 with otherwise typical breast development, or if breast development has not begun by age 13. These are clinical reference points, not a judgment about a young person. A trusted adult may support a visit if the adolescent wants one, while the clinician should explain privacy and consent.
| Last period and usual cycle | Pregnancy test date and result | Recent illness, stress or weight change | Medicines or contraception | Other symptoms | Questions and next review |
|---|---|---|---|---|---|
What can cause periods to stop?
Pregnancy, breastfeeding, menopause and some hormonal contraceptives can normally change or stop bleeding. Other causes include PCOS, thyroid or prolactin changes, primary ovarian insufficiency, some medicines, major weight or exercise changes, stress, chronic illness or a structural problem. A missed period alone does not identify the cause.
Changes in health, medicines or daily life can affect cycles
Tell the clinician about recent illness, sleep or stress changes, major weight change, intense exercise, eating difficulties, childbirth and breastfeeding. Some medicines and hormonal contraception affect bleeding. These are clues for assessment, not reasons to blame a person or assume a lifestyle change is the full explanation.
PCOS, thyroid conditions and ovarian insufficiency are possibilities
PCOS, thyroid disease, elevated prolactin and ovarian hormone changes can affect ovulation and periods. Some causes need treatment for health beyond the menstrual cycle, including bone or fertility concerns. A clinician can explain what a specific result means rather than diagnosing from acne, body hair or one blood test alone.
A stopped period does not automatically mean infertility
The meaning depends on the cause, and many causes can be assessed or treated. If you want pregnancy now or later, say so; if you do not, say that too. The care plan should reflect your health and goals rather than assume every woman wants to conceive.
What tests might a clinician recommend?
Assessment starts with your cycle history, symptoms, medicines and pregnancy possibility. Depending on the findings, a clinician may suggest a pregnancy test, thyroid or prolactin tests, reproductive hormone tests or pelvic ultrasound. Not everyone needs every test, and the result should be explained in context.
Pregnancy is usually checked first when possible
A clinician may recommend a urine or blood pregnancy test. If there is pelvic pain or bleeding and pregnancy may be possible, urgent assessment is important because an ectopic pregnancy and other emergencies need prompt care. Do not wait for a scheduled period review if severe symptoms appear.
Ask what each blood test is intended to check
Thyroid-stimulating hormone, prolactin, FSH, estradiol and other tests may be considered based on symptoms and history. Ask why a test is recommended, whether medicine or cycle timing affects it, and who will review the result. Do not start hormones or supplements to trigger bleeding without clinical advice.
An ultrasound may answer a specific structural question
Pelvic ultrasound can help assess the uterus and ovaries in some situations. Ask whether an abdominal or internal scan is proposed, what it can show and whether another approach is suitable for your age, comfort and consent. Keep a copy of the report and agree who will explain it.
Missed periods: frequently asked questions
Can stress delay a period?
Stress can be one factor affecting cycles, but it is not the only possible cause. Pregnancy, medicines, thyroid or prolactin changes, PCOS and other conditions may also matter. A persistent gap deserves an assessment rather than an assumption.
How long should I wait before seeing a clinician?
If pregnancy is possible, test rather than simply waiting. ASRM’s 2024 guidance recommends evaluation after more than three months without a period when cycles were regular, or six months when they were irregular. Seek care sooner for severe pain, unusual bleeding or other concerning symptoms.
Can contraception stop periods?
Some hormonal contraceptives can change or stop bleeding. Do not stop a prescribed method or assume it explains a new symptom without advice. A clinician can discuss the method, pregnancy possibility and whether evaluation is needed.
Should every missed period be treated with hormones?
No. Treatment depends on the cause, health effects and your goals. Ask what is known, what remains uncertain and whether monitoring or a specific treatment is appropriate.
Words you can use
Ask for a period evaluation that fits your goals
At a primary-care, adolescent-health or gynaecology appointment
“My last period was [date], and my usual cycles are [pattern]. Pregnancy is [possible / not possible / uncertain]. I have also noticed [symptoms, medicines or recent changes]. Could you explain which causes should be considered, what tests would answer the next question and when we will review the results? My pregnancy goals are [now / later / none].”
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Sources and publication record
Clinical sources checked 28 September 2026; medical and human Hindi editorial review pending · Sources checked .
- Current Evaluation of Amenorrhea: A Committee Opinion (2024)American Society for Reproductive Medicine
- Ectopic pregnancy: symptomsNational Health Service, United Kingdom
- Emergency Response Support System 112Ministry of Home Affairs
- International Evidence-Based Guideline for the Assessment and Management of PCOS (2023)Monash Centre for Health Research and Implementation and International PCOS Network
- Evidence-based guideline: premature ovarian insufficiency (2024)European Society of Human Reproduction and Embryology, American Society for Reproductive Medicine, and International Menopause Society