Periods can hurt because the womb tightens to help shed its lining. Mild cramps may be manageable, but pain that stops you sleeping, moving, studying, working, or caring for yourself deserves medical attention. Severe or worsening pain can also be linked with endometriosis, adenomyosis, fibroids, infection, or another cause.

Why are periods painful?

Period pain is called dysmenorrhea. The womb (uterus) is a muscle. During a period, it contracts, or tightens, as the lining leaves the body.

Chemicals called prostaglandins help trigger these contractions. Higher prostaglandin activity can be linked with stronger cramps, nausea, loose stools, headaches, or dizziness. The ACOG painful-period guide explains that cramps may begin before bleeding and often feel strongest near the start of a period.

Pain is personal, but impact is observable. Missing school, cancelling work, waking through the night, vomiting, or being unable to stand are useful details to share with a clinician.

What are primary and secondary period pain?

Primary dysmenorrhea means period pain without another pelvic condition found as the cause. It often starts in the teen years after cycles begin to include ovulation.

Secondary dysmenorrhea means pain linked with another condition. It may begin later, become worse over time, last beyond the first days of bleeding, or occur at other points in the cycle.

Possible causes of secondary pain include:

• Endometriosis.
• Adenomyosis.
• Fibroids.
• Pelvic infection.
• Ovarian cysts.
• Structural differences in the womb or reproductive tract.
• A copper intrauterine device in some people.

The pattern offers clues, but it cannot confirm the cause. Read the Femio guide to endometriosis if pain occurs with sex, bowel movements, urination, or at other times of the month.

Which symptoms are useful to notice?

Track more than a pain score. Note:

• Where the pain is: centre, one side, back, hips, or legs.
• When it begins and ends.
• Whether it is cramping, sharp, burning, aching, or pressure-like.
• Whether it occurs outside the period.
• Nausea, vomiting, diarrhoea, dizziness, or headaches.
• Pain during sex, urination, or bowel movements.
• Heavy bleeding or bleeding between periods.
• What the pain stops you doing.

One-sided pain, pain with pregnancy possibility, or a sudden change needs a different level of attention from a familiar cramp pattern.

How do clinicians assess painful periods?

A clinician may ask about your periods, pain, sexual health, pregnancy possibility, medicines, past procedures, and family history. You can ask to pause or decline any examination, and the clinician should explain why it is being offered.

Depending on your age and symptoms, assessment may include an abdominal or pelvic examination, pregnancy testing, infection testing, blood tests, or an ultrasound. Further imaging or referral may be discussed when endometriosis, adenomyosis, fibroids, or another cause is possible.

A normal scan does not make pain unimportant. Some causes of pelvic pain are not visible on a routine ultrasound. The next step should reflect the whole pattern and its effect on life.

How to prepare for an appointment

Start with the effect of pain. Say what it stops you doing. This may be easier than choosing one number on a pain scale.

Bring a short record if you have one. Include period dates, pain days, heavy flow, bowel or bladder symptoms, and pain during sex. Add what you tried and whether it helped.

Questions you may want to ask include:

• What causes fit this pattern?
• Do I need an examination or scan?
• What can each option help with?
• Could an option affect pregnancy plans?
• When should we review the plan?

You can ask for a chaperone during an examination. You can also ask the clinician to stop at any point. Consent is needed throughout.

If the first plan does not help, return for review. Say what changed and what did not. Ask whether the working explanation still fits.

Pain can have more than one cause. Care may also need more than one approach. You are not wasting anyone's time by asking for the next step.

Bring someone you trust if you want support. They can take notes, ask questions, or help you get home after the visit.

What care can involve

For cramps without an urgent cause, a clinician or pharmacist may discuss:

• Anti-inflammatory pain medicines.
• Heat, such as a warm bath or covered heat pack.
• Gentle movement when it feels possible.
• Hormonal medicines that reduce ovulation or bleeding.
• Pelvic-health physiotherapy.
• Support for sleep and coping with persistent pain.
• Specialist review or surgery when another condition is suspected or found.

Do not use a medicine that is unsafe for your age, pregnancy status, allergies, stomach, kidney, liver, heart, or other health needs. Follow the label and ask a pharmacist or clinician when unsure. Femio does not provide medicine doses.

The NHS period-problems guide recommends seeing a doctor when pain is severe enough to affect daily life.

When to see a doctor

Book an appointment if period pain regularly disrupts daily life, is getting worse, starts after years of easier periods, or continues outside bleeding days. Also seek care for pain during sex, bowel movements, or urination; difficulty becoming pregnant; heavy bleeding; or bleeding between periods.

Tell the clinician what you have tried and whether it helped. Bring period and symptom dates if available. You do not need to prove that the pain is severe enough.

Seek care now: Get urgent medical help for sudden severe pelvic or abdominal pain, fainting, shoulder-tip pain, severe weakness, fever with worsening pelvic pain, or pain with heavy bleeding. If pregnancy is possible, say so. Contact local emergency services or go to the nearest emergency department.

Living with period pain day to day

Plan for comfort without accepting severe pain as something you simply have to endure. Keep a covered heat pack, water, and period products accessible if they help. Build in rest where possible, but seek clinical support when pain controls your schedule.

Ask school or work for practical adjustments when needed. Flexible breaks, bathroom access, a place to use heat, or remote work can reduce disruption. You can decide how much health detail to share.

Persistent pain can affect mood, sleep, sex, and relationships. Support for these effects belongs in your care plan too.

How to track painful periods in Femio

Log when pain begins, where it occurs, severity, other symptoms, and its effect on daily life. Add period flow and any pain outside the period.

Femio can place symptoms beside cycle dates and create a summary. It cannot confirm the cause or decide whether pain is safe to manage at home.

Related guides cover heavy periods and menstrual-cycle basics. You can also read how painful periods are assessed and which period-pain care options a clinician may discuss.

Frequently asked questions

Is severe period pain normal?

Pain can be common, but pain that disrupts daily life deserves assessment. “Common” does not mean you must manage it alone.

Can period pain start before bleeding?

Yes. Cramps can begin shortly before a period and continue into the first days of bleeding. Pain that starts much earlier, lasts longer, or occurs throughout the month is useful to report.

Can a normal ultrasound rule out endometriosis?

No. An ultrasound can find some causes of pain, but it may not show all endometriosis. A clinician uses symptoms, examination, imaging, and other steps as needed.