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Menstrual Period - Missed or Late

Definition

  • Late or missed menstrual period
  • Late period: 5 or more days late compared to normal menstrual cycle
  • Missed period: no menstrual flow for more than 6 weeks
  • Teen not using any birth control that stops periods. These products include birth control shots, implants, and IUDs with hormones.

Normal Cause of a Missed Period during the First Year

  • Skipping periods is common during the first 1 to 2 years after they start. This is due to not releasing an egg each month.
  • This is most likely the cause if less than 2 years since the first period
  • Has missed periods in the past or has had only 1 or 2 periods
  • Otherwise healthy
  • No signs of pregnancy such as breast tenderness, breast swelling or nausea

Common Cause of a Missed Period after the First Year

  • Pregnancy is the most common cause

Other Causes

  • Stress
  • Dieting, extreme exercise and weight loss
  • Polycystic ovarian disease
  • Endocrine disorders
  • Birth control products like birth control shots, implants, and some IUDs

Home Urine Pregnancy Tests

  • Home urine pregnancy tests do not cost very much. They are easy to use. Most drugstores sell these tests. No prescription is needed.
  • Urine pregnancy tests are very accurate. They can turn positive as early as the first week after a missed period.
  • It is best to do the pregnancy test first thing in the morning. Reason: hormone levels are higher in the morning urine.
  • Sometimes, a home test is negative even if you think you might be pregnant. In this case, repeat the test. Do the repeat test in 3-5 days. You can also go to a doctor's office for testing.

Barton Schmitt MD, FAAP
Disclaimer: this health information is for educational purposes only. You, the reader, assume full responsibility for how you choose to use it.
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