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Understanding Missed or Delayed Periods

It's not unusual to have a delayed or missed period from time to time and in many cases, it’s not a sign of anything serious. However, there are several reasons your menstrual cycle may be disrupted.

Common Causes of a Late or Missed Period

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Pregnancy

One of the most common reasons for a missed period is pregnancy. If you’ve had unprotected sex and your period is late, it's a good idea to take a pregnancy test.

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Stress

High levels of stress can affect the hormones that regulate your cycle leading to delays or missed periods.

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Weight Changes

Significant weight loss, weight gain, or being underweight can all impact your menstrual cycle. This is often due to hormonal changes that affect ovulation.

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Excessive Exercise

Intense physical activity, particularly combined with low body fat or restricted calorie intake, can sometimes lead to missed periods, especially in athletes.

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Contraception

Some types of hormonal contraception (like the pill, injection, implant, or IUD) can alter your menstrual cycle. It may take time for your periods to return to normal after starting or stopping contraception.

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Polycystic Ovary Syndrome (PCOS)

PCOS is a common condition that affects how the ovaries work. It can cause irregular periods or stop them altogether due to hormonal imbalance.

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Peri Menopause or Menopause

As you approach menopause (usually between ages 45 and 55), your periods may become irregular or stop altogether.

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Medical Conditions

Certain health conditions like thyroid disorders or diabetes can affect menstrual cycles.

When to See a Doctor

You should contact your GP if:

  • You’ve missed more than three periods in a row and you're not pregnant
  • Your periods become irregular without a clear reason
  • You’re experiencing other symptoms like excessive hair growth, acne, or sudden weight gain
  • You’re concerned about any changes in your cycle
  • Unexpected heavy bleeding
  • Severe pain or pressure in the lower abdomen
  • Dizziness and high fever
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What You Can Do

  • Keep track of your menstrual cycle using a calendar or an app
  • Maintain a healthy, balanced lifestyle
  • Manage stress through exercise, relaxation techniques, or speaking to someone
  • If you’ve recently started or stopped contraception, give your body time to adjust