Your Period Problems Aren't Normal: What the Research Actually Says

Your periods are painful. So painful you take days off work or stay home from events. Your periods are heavy, flooding, clots, needing to change every two hours, sometimes overnight. Your periods are irregular. Or maybe all three.

You mention it to your GP. They say, "It's just your period. That's normal." Or they offer the pill as a "solution."

It's not normal. And the pill masks the problem, it doesn't fix it.

Here's what the research says: painful periods are common, but they are not normal. They're a signal that something is wrong. Heavy periods are a signal. Irregular periods are a signal. And most GPs aren't investigating what that signal means.

Painful periods are common but not normal, and something is wrong

Dysmenorrhoea (painful periods) affects 45-95% of menstruating people globally. Because it's so common, it's been normalised. "That's just how periods are." No. Common is not the same as normal. Most people having something doesn't make it right.

Pain during periods, pain that requires strong painkillers, pain that interferes with functioning, is a signal. It indicates inflammation, hormonal imbalance, structural abnormalities, or disease. It is not something to accept.

Primary dysmenorrhoea (painful periods without identifiable structural disease) is thought to be caused by elevated prostaglandins (pro-inflammatory compounds) during your period. But secondary dysmenorrhoea (painful periods caused by underlying conditions) is diagnosed in 20-30% of cases when properly investigated. That means 1 in 4 people with painful periods have a treatable underlying cause that was never found because they accepted the pain as normal.

Endometriosis: the most common diagnosis people don't have

Endometriosis is a condition where cells similar to the uterine lining grow outside the uterus, on ovaries, fallopian tubes, bladder, bowel, or elsewhere in the abdomen. These cells respond to hormones the same way uterine lining does, so they bleed during your cycle, causing severe pain, inflammation, and scarring.

The numbers are staggering. Endometriosis affects approximately 1 in 10 women of reproductive age globally. In the UK, that's roughly 1.5 million women. Yet the average time to diagnosis is 8 years. Eight years of pain before diagnosis.

Why the long delay? Endometriosis is underdiagnosed because: (1) it requires laparoscopic surgery to diagnose definitively (a procedure many GPs don't offer), (2) ultrasound often misses early stages, and (3) symptoms, painful periods, heavy periods, pain during sex, pelvic pain, are dismissed as "normal." Women are told to "just take ibuprofen" for years before anyone investigates properly.

A 2020 study published in Human Reproduction Update found that the average diagnostic delay was particularly long in younger women and those without infertility (which can be a presenting symptom). Women without fertility problems waited an average of 10 years for diagnosis. That's a decade of untreated disease allowing scarring and inflammation to progress.

The irony: endometriosis can cause infertility, but infertility is often the first symptom taken seriously. If you have pain without infertility concerns, you wait.

PCOS: the metabolic condition disguised as reproductive

Polycystic ovary syndrome affects 6-20% of women of reproductive age (the range varies by diagnostic criteria used). But PCOS is not actually a reproductive disease, it's a metabolic condition with reproductive symptoms.

PCOS involves insulin resistance (30-70% of PCOS patients have clinical insulin resistance), chronic inflammation, and hormonal dysregulation. This leads to irregular or absent periods, excessive androgen production (causing acne, facial hair, male-pattern baldness), and ovulation problems.

The problem: PCOS is often "diagnosed" and "treated" with the contraceptive pill to regulate periods. The pill works symptomatically, it creates predictable bleeding and may improve acne. But it does nothing to address the underlying metabolic dysfunction. It masks the condition instead of treating it.

A 2019 systematic review in the Journal of Clinical Medicine found that women with PCOS on hormonal contraception alone had persistent insulin resistance, metabolic abnormalities, and cardiovascular risk factors. The pill controlled symptoms but didn't improve the disease.

Additionally, many women with PCOS are never diagnosed because they menstruate somewhat regularly or their symptoms are blamed on other causes. Irregular periods? "Maybe you're stressed." Acne? "Hormonal acne." Hair loss? "Genetic." Without investigation, PCOS goes undiagnosed and untreated.

Adenomyosis: the condition you've never heard of

Adenomyosis is a condition where endometrial tissue (the uterine lining) invades into the myometrium (the muscle layer of the uterus). It causes severe dysmenorrhoea, heavy periods, pelvic pain, and often infertility. Yet most women have never heard of it. Most GPs don't screen for it. Most women suffer for years before diagnosis.

Why is adenomyosis invisible? Because unlike endometriosis (visible during laparoscopy), adenomyosis requires either MRI imaging or hysterectomy tissue examination to diagnose definitively. Standard pelvic ultrasound often misses it. It's not routinely screened for. So women with symptoms are investigated for endometriosis, found negative, and told "your pelvis looks normal", while adenomyosis quietly progresses.

A 2018 meta-analysis in Reproductive Sciences found that adenomyosis was present in 20-40% of women who underwent hysterectomy for severe dysmenorrhoea, heavy periods, or pelvic pain, yet most had never been diagnosed before surgery.

Adenomyosis is often progressive. It worsens with age and worsens with repeated uterine procedures (D&C, abortion, miscarriage). A woman could go decades with undiagnosed adenomyosis, getting worse each year, until hysterectomy is finally considered "the answer."

Heavy periods and iron deficiency: the vicious cycle

Heavy periods lead to iron deficiency. Iron deficiency leads to worse bleeding (impaired clotting function, weak blood vessel integrity). You're caught in a cycle where each month you lose more iron, and low iron makes the next period worse.

This is particularly common in women with fibroids, adenomyosis, or other structural causes of heavy bleeding. The bleeding is not addressed, so iron stores deplete, making the problem progressively worse.

See the article on iron deficiency for full details, but the key point here: if you have heavy periods, you're almost certainly iron deficient unless you're actively supplementing. Don't wait for anaemia to develop. Get iron assessed and supplemented now.

The pill: it masks symptoms, it doesn't treat disease

The contraceptive pill is often offered as "treatment" for period problems. It reduces bleeding. It regulates cycle timing. It improves acne. So it feels like treatment.

But it's not. It's symptom suppression. The underlying disease, endometriosis, adenomyosis, PCOS, fibroids, is still there, still progressing. The pill is suppressing symptoms while the condition advances underneath.

Additionally, the pill has its own risks. Blood clots, stroke, MI (myocardial infarction), and cervical cancer risk are all increased with hormonal contraceptive use. These risks are small in absolute terms, but they exist. You're taking on these risks to suppress symptoms of disease that could be diagnosed and treated.

The research is clear: hormonal contraception alone is not adequate treatment for endometriosis, adenomyosis, or PCOS. It's a holding pattern while the underlying condition progresses.

Fibroids: 70% of women develop them by age 50

Uterine fibroids are benign tumours of the uterus. By age 50, 70-80% of women have fibroids (though not all are symptomatic). In younger women, they're less common but still significant.

Symptoms depend on size and location. Submucosal fibroids (growing into the uterine cavity) cause heavy bleeding and irregular periods. Intramural fibroids (within the muscle) cause pain and pressure. Subserosal fibroids (outside the uterus) may be asymptomatic but can still cause pelvic pressure or pain.

Many women are never diagnosed with fibroids because they're asymptomatic. Others develop heavy bleeding, assume it's normal menstruation, and never get imaging. Fibroids are typically diagnosed through ultrasound when you get pelvic imaging for other reasons.

Perimenopause starts earlier than you think

Perimenopause is the transition to menopause. It typically lasts 4-10 years. The age of onset is usually 40-50, but it can start in the mid-30s. Many women don't realise their symptoms in their mid-to-late 30s are perimenopause.

During perimenopause, hormones fluctuate wildly, progesterone drops faster than oestrogen. This hormonal chaos causes irregular periods, heavy periods, worsening PMS, mood changes, hot flashes, and sleep problems. Many women are convinced something is seriously wrong, get endless testing, and are told nothing is abnormal.

The problem: perimenopause isn't "normal" aging that should be accepted. Hormone replacement therapy (HRT) or other treatments can significantly improve quality of life. But you need to recognise perimenopause is happening. If you're 35+ with new or worsening period problems, mood changes, sleep disruption, or hot flashes, perimenopause might be the cause.

A 2022 study in Climacteric found that women with symptomatic perimenopause had significantly better quality of life with appropriate treatment (HRT, SSRIs, progesterone), but treatment was often delayed because perimenopause wasn't recognised or discussed.

The hormonal IUD: evidence for heavy periods and period pain

The levonorgestrel IUD (Mirena, Skyla, Liletta) releases a small amount of progestin directly into your uterus. Systemically (in your bloodstream), levels are very low, you don't get systemic progestin side effects like you might with oral contraceptives. Locally (in your uterus), concentrations are high enough to thin the uterine lining and suppress ovulation.

The result: bleeding is dramatically reduced (50-90% reduction on average), and the IUD lasts 3-5+ years. For women with heavy periods or dysmenorrhoea from structural causes (fibroids, adenomyosis), the hormonal IUD is often transformative.

A 2017 Cochrane systematic review covering 25 trials found that the levonorgestrel IUD was more effective at reducing heavy menstrual bleeding than any other contraceptive method, with efficacy rates of 80-90% after 12 months.

What tests to demand and what you're looking for

For heavy or irregular periods: Pelvic ultrasound (transvaginal is better than transabdominal for seeing fibroids and adenomyosis), full blood count (check for anaemia), and iron panel (ferritin, serum iron, TIBC). If ultrasound is abnormal, might need MRI for adenomyosis or further characterisation of fibroids.

For painful periods: Pelvic ultrasound, and if severe or imaging normal, referral to gynaecologist for possible laparoscopic assessment of endometriosis.

For irregular periods: Pelvic ultrasound, FSH, testosterone, androstenedione, fasting insulin (or glucose tolerance test), and consider thyroid function (TSH, free T4) as thyroid disease can cause irregular periods.

For all period problems: Never accept "your tests are normal" without knowing what was actually tested. Demand the specific tests above, not just generic "hormone tests." Many GPs don't order the right tests to diagnose PCOS or other conditions.

The hard truth: "it's just your period" is medical gaslighting

When you report significant pain, heavy bleeding, or irregular periods and your GP responds "it's just your period" or "that's normal," you're being gaslit. Common doesn't mean normal. Symptoms are signals. Your body is trying to tell you something is wrong.

The research is clear: untreated endometriosis progresses. Adenomyosis worsens. PCOS increases cardiovascular and metabolic disease risk if not treated. Fibroids can cause severe bleeding leading to iron deficiency requiring transfusion.

You deserve investigation. You deserve diagnosis. You deserve treatment that addresses root causes, not just suppresses symptoms.

If your current GP won't investigate, find one who will. Request referral to gynaecology. Push for imaging. Demand specific tests. Your health depends on it.