Why Is My Period Late? Signs, Causes & Expert Advice

If your period is typically regular, it can be troublesome if it comes late. Although for many women pregnancy is the first thing that comes to mind, there are several other reasons that may cause periods to change.

Sometimes, there are irregularities in the menstrual cycle that aren’t necessarily a health issue. But knowing what may cause a late period can help you decide when it may be a good time to consult your doctor for medical advice.

What Is Considered a Late Period?

A woman’s period cycle may differ from one woman to another. Some women have cycles that are 21-35 days long, but a normal cycle is 28 days.

Generally, if a period is late, it is considered as such when it doesn’t arrive at the time expected according to your regular cycle. Sometimes not having a period for a few days is not a cause for concern, but if periods are irregular or do not happen frequently, a health care professional should evaluate it.

Pregnancy

One of the most common reasons for a missed or late period is pregnancy. For sexually active women who have not had their period as expected, a pregnancy test might help to clear up the confusion.

Early pregnancy can also be accompanied by symptoms such as:

• Breast tenderness
• Fatigue
• Nausea
• Increased urination
• Mood changes

If you think you might be pregnant, see your midwife or GP to get further information and advice about what to do next.

Stress and Anxiety

Stress can greatly affect the body’s hormonal levels. Stress, either emotional or physical, can cause some of your hormones to become disturbed.

Stresses that are common include:

• Work pressure
• Family responsibilities
• Financial concerns
• Major life changes
• Academic demands

Hormone production can be affected by stress, and this can cause delays to ovulation and a late period.

Significant Weight Changes

Weight gain or loss, especially sudden, can affect hormone levels and regular periods.

When body weight is low, it can impact hormone production, and when gaining too much weight, it can impact the hormonal balance. Both can cause irregular and/or delayed periods.

A balanced nutrition and maintaining good health will contribute to regular menstruation.

Excessive Exercise

While exercise is good for general health, strenuous exercise programmes can sometimes impact menstraul periods.

A change in hormone levels and energy balance could cause women who are involved in high intensity exercise or excessive exercise to have a delayed, irregular or missed period.

If you started a new exercise program lately and have irregular periods, it might be a good idea to talk to a health care provider about this.

Polycystic Ovary Syndrome (PCOS)

PCOS is a very common hormonal disorder which may impact the ovulation and menstruation cycle. Irregular or delayed periods or missed periods are common with PCOS.

Additional symptoms can be:

• Acne
• Hairy face and/or body
• Weight gain
• Difficulty becoming pregnant

If symptoms are present, professional assessment is important as PCOS can have a negative impact on long-term reproductive health.

Thyroid Disorders

The thyroid is responsible for producing many hormones, and thus plays an important role in regulating several processes of the body.

A thyroid condition such as underactive (hypothyroidism) or overactive (hyperthyroidism) thyroid may lead to irregular periods.

Other symptoms are:

• Fatigue
• Weight changes
• Mood fluctuations
• Changes in energy levels.

Proper diagnosis and treatment can often help restore normal menstrual patterns.

Hormonal Contraception

Changes in your menstrual period may occur at first use, when stopping or changing types of hormonal contraception.

Since birth control pills, contraceptive injections, hormonal implants and other contraceptive methods can sometimes cause delayed or irregular periods as the body adjusts to the changes in hormones, there are times when you may experience this.

These effects are usually temporary but if any concerns are raised should be discussed with a healthcare professional.

Perimenopause

Women in their perimenopause stage can experience changes in their periods because of natural changes in their hormones.

Perimenopause may start a few years prior to menopause and frequently leads to:

• Irregular periods
• Longer or shorter cycles,
• Increased or decreased periods.
• Altered menstruation.
• Missed periods

These changes are natural and a normal part of the transition to menopause.

When Should You Seek Medical Advice?

Occasional changes to the cycles are not a problem, but if you feel the need for medical advice, you should do so if:

• You always miss your period.
• You have been absent for more than one class.
• You have a lot of pain
• You notice any changes in bleeding patterns.
• You are concerned about getting pregnant
• Your periods are getting more irregular.

A healthcare professional will be able to find out if there is an underlying cause or not and if there is, recommend treatment.

Understanding Your Menstrual Health

While a late period isn’t always a sign of trouble, it may be an indicator of hormonal or lifestyle changes in your body. Keeping track of your periods can give you insights on your health and wellbeing.

If you are worried or have irregular periods that last for longer, it’s important to get some professional advice to get clarity and access to the right support.

Professional consultations can guide women seeking information on menstrual health and offer them personalised recommendations, as well as help identify potential causes.