My period is one month late

Pregnancy is a common reason for a missed period when sperm could have entered the vagina, even if contraception was used. Stress, disrupted sleep, travel, illness, changes in weight, intense exercise, breastfeeding, and some medicines can delay ovulation. Polycystic ovary syndrome can make ovulation irregular, while perimenopause can make cycles unpredictable. A late period does not by itself identify one cause.

Pay attention to nausea, breast tenderness, unusual tiredness, pelvic pain, discharge, or unexpected bleeding. Record the date your period was expected, your usual cycle pattern, contraception, medicines, and any recent health changes.

Take a home pregnancy test if pregnancy is possible, using the instructions supplied with the test. If the result is negative but your period does not arrive, repeat testing as directed or arrange a clinical appointment. Book routine care if late or absent periods recur, or if you have new acne, increased facial hair, milky nipple discharge, headaches, or vision changes. A clinician can review your history and decide whether examination or tests are needed.

Seek urgent care for severe or one-sided lower abdominal pain, fainting, shoulder-tip pain, heavy bleeding, or dizziness when pregnancy is possible. These symptoms may signal a problem requiring prompt assessment. Fever, worsening pelvic pain, or feeling acutely unwell also needs timely medical attention.

Ask when to repeat a pregnancy test, whether contraception or medicines could affect your cycle, and what pattern of missed periods warrants investigation. You can also ask whether symptoms suggest polycystic ovary syndrome or perimenopause and what evaluation would distinguish those possibilities.