Period problems

7 min read

If problems with your periods are affecting your life, there's help and support available. Find out how to treat painful periods, heavy periods, PMS, ovulation pain and what to do if you're not having periods.

Most women have a regular menstrual cycle that's around 28 days long (28 days from the start of one period to the start of the next), and they bleed for three to seven days each cycle. However, some women experience problems with their periods.

Before you see your doctor about period problems, it can be useful to keep a diary of your symptoms throughout the menstrual cycle. This can give your doctor a detailed idea of what happens, and when, during your cycle.

Painful periods

Pain during periods is common. It's caused by the womb contracting to push out the blood.

Exercise may help to relieve the pain, and some women find over-the-counter painkillers, such as

, work. Ask your pharmacist for advice.

If the pain is so severe that it affects your daily life, talk to your doctor. Hormonal contraception – such as the

combined pill
the intrauterine system (IUS)
, the contraceptive patch or the contraceptive injection – can reduce period pain.

Read more about

painful periods

Find more useful information on periods with our

complete Guide

Heavy periods

Some women naturally have heavier periods than others, but if your periods are so heavy that they impact your life, there is help available.

Talk to your doctor about your bleeding, including how often you have to change your sanitary protection (towels, tampons or menstrual cup).

Your doctor can investigate why you're experiencing heavy bleeding. These investigations may include blood tests and scans.

The National Institute for Health and Care Excellence (NICE)
suggests a number of possible NHS treatments for heavy periods. These include:

  • some forms of hormonal contraception, such as the intrauterine system (IUS) – which completely abolishes periods in many women – the contraceptive implant , contraceptive injection or the combined pill
  • tranexamic acid tablets (taken for a few days around the time of your period)
  • non-steroidal anti-inflammatory drugs (NSAIDs)
  • progestogen tablets (containing a synthetic version of the hormone progesterone, released naturally in your body)

In some cases, surgery may be an option if other treatments don’t work, or if there are problems with the womb, such as

fibroids (non-cancerous growths)
. Surgery may include removing fibroids, the lining of the womb, or the womb itself.

Read more about

heavy periods
, including treatment.

Irregular periods

A period normally lasts two to seven days, with the average period being five days long.

However, some women have an irregular menstrual cycle. This is where there is a wide variation in:

  • the time between your periods (they may arrive early or late)
  • the amount of blood you lose (periods may be heavy or light)
  • the number of days the period lasts

Irregular periods
can be common during puberty and just before the menopause.

Find out about the

causes of irregular periods
, which can include a hormone imbalance and changing your method of contraception, and
treating irregular periods

Absent periods

Having no periods may indicate an underlying health problem. If this happens to you, see your doctor. Periods can also stop as a result of severe weight loss, stress or strenuous exercise.

Read about

absent periods

Premenstrual syndrome (PMS)

PMS is thought to be linked to changing levels of hormones throughout the menstrual cycle. Not all women experience PMS, and among those who do, the range and severity of symptoms can vary.

Severe PMS can disrupt a woman’s personal and work life, making it hard to function in the days before her period.

Symptoms include:

  • mood swings
  • irritability
  • depression
  • headaches
  • bloating
  • breast tenderness

PMS symptoms

Symptoms appear and can intensify during the second half of the menstrual cycle, and then ease and disappear after the period has started.

The Royal College of Obstetricians and Gynaecologists has useful information on

managing PMS

Some women who experience PMS benefit from following general health advice, such as eating a healthy, balanced diet, reducing their alcohol and caffeine intake, and getting regular exercise to keep fit.

Cognitive behavioural therapy (CBT)
may also help. CBT is when a counsellor helps you to recognise negative behaviours and work out strategies to change them.

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Various complementary therapies and vitamin supplements claim to help with PMS. While more research is needed, current information seems to show that magnesium and Agnus Castus can help some women.

Some complementary therapies can interact with medication, so get advice from your doctor before starting any.

Other PMS treatments include:

In some cases, there may be an underlying psychological condition that doesn’t go away when the period finishes. This is an indication that it's not a symptom of PMS. In such cases, treatment for the psychological condition may help.

Read more about

, including symptoms and treatment.


This is a condition where the cells lining the womb (endometrium) appear in other areas of the body. This is usually in the abdominal area, including the pelvis, ovaries and fallopian tubes.

Period hormones cause the ovaries to release an egg and the womb lining to thicken. If the egg isn’t fertilised, the womb lining breaks down and bleeds, and leaves the body as a period. Endometriosis cells elsewhere in the body also break down and bleed, which causes inflammation, pain and adhesions (scar tissue).

Signs of endometriosis

Not all women have symptoms, but common symptoms can include:

  • painful, heavy or irregular periods
  • pain during or after sex
  • infertility
  • problems opening your bowels (passing stools)

These symptoms can signify a range of other conditions. A laparoscopy (a surgical procedure in which the surgeon looks into the abdomen with a small camera) is the only way to make a definite diagnosis.

Endometriosis treatment

Different treatment options include:

  • painkillers
  • hormone treatments – such as progestogen
  • hormonal contraceptive methods – such as the
    combined pill
    , contraceptive patch or
    intrauterine systme (IUS)
  • drugs that can cause a temporary and reversible menopause by stopping the body producing oestrogen

In severe cases, surgery can be carried out to remove the endometriosis or the ovaries and womb.

Some, but not all, women with endometriosis have difficulty getting pregnant.

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If you have missed a period and think you might be pregnant, find out the

signs and symptoms of pregnancy
and about
doing a pregnancy test

Ovulation pain

Some women get a one-sided pain in their lower abdomen when they ovulate.

The pain can be a dull cramp or a sharp and sudden twinge. It can last just a few minutes or continue for a day or two. Some women notice a little vaginal bleeding when it happens.

Painful ovulation can usually be eased by simple remedies like soaking in a hot bath or taking an over-the-counter painkiller, such as


If you’re in a lot of discomfort, talk to your doctor about other treatment options. Birth control methods that stop ovulation, such as the

combined Pill
or contraceptive implant, can completely banish ovulation pain.

Read more about

ovulation pain

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Important: Our website provides useful information but is not a substitute for medical advice. You should always seek the advice of your doctor when making decisions about your health.