The symptoms of ovarian cancer that matter most are easy to dismiss: a swollen or bloated tummy, pain in the tummy or pelvis, feeling full quickly or losing your appetite, and needing to pee more often or more urgently. On their own, each is usually caused by something harmless. What makes them worth a doctor's visit is the pattern: they are new for you, they keep happening (the NHS suggests watching for symptoms on roughly 12 or more days a month), and they do not go away.
Ovarian cancer has long been called a "silent killer", but that label is a little misleading. Most women do have symptoms before diagnosis. The trouble is that the symptoms are vague and easily blamed on digestion, stress or age. Knowing the pattern is the best tool you have.
Why ovarian cancer is often found late
The ovaries sit deep in the pelvis, so a tumour can grow for some time without causing a lump you can feel. Early changes press gently on the bowel and bladder, which is why the first signs feel like an upset stomach or a bladder that is acting up. Many women, and sometimes their doctors, put the symptoms down to irritable bowel syndrome, a urine infection or the menopause.
As a result, around three quarters of women are diagnosed once the cancer has already spread beyond the ovaries. Survival is much better when it is caught early, which is why paying attention to persistent symptoms matters so much.
It also helps to know the scale of the disease. The American Cancer Society estimates that in 2026 about 21,010 women in the United States will be diagnosed with ovarian cancer and about 12,450 will die from it. A woman's lifetime risk of developing it is about 1 in 91. It is one of the leading causes of cancer death in women.
The four main symptoms
These are the signs that UK and US health bodies highlight most. If you have any of them frequently, and they are new or unusual for you, book an appointment.
1. A bloated or swollen tummy
Ordinary bloating comes and goes with meals and your cycle. Bloating linked to ovarian cancer tends to stay, or come back day after day, and the waistband of your clothes may feel tighter. In more advanced disease, fluid can build up in the abdomen (ascites), making the belly visibly swollen.
2. Pain or tenderness in the tummy or pelvis
This can be a dull ache, a feeling of pressure or tenderness low in the abdomen or between the hips. Pain that is new and keeps returning is the important part.
3. Feeling full quickly or losing your appetite
Many women describe eating a few mouthfuls and feeling as if they have had a large meal. This is often mistaken for indigestion. It is one of the most consistent early signs in research on symptoms before diagnosis.
4. Needing to pee more often or more urgently
A growing mass can press on the bladder. If you are suddenly going to the toilet much more often, without signs of an infection such as burning, it is worth mentioning.
Other symptoms that can appear
These are less specific, but they can come along with the main symptoms, and the NHS lists them as possible signs too.
5. Back pain
Lower back pain is extremely common and usually has nothing to do with cancer. It becomes more meaningful if it is new, does not have a clear cause such as strain, and comes together with bloating or pelvic discomfort.
6. Changes in bowel habits
Constipation or diarrhoea, wind and indigestion can all occur when a tumour or fluid presses on the bowel. A lasting change from your normal pattern deserves a check, whatever the cause turns out to be.
7. Tiredness, nausea and weight loss
Feeling exhausted all the time, feeling sick or vomiting, and losing weight without trying are general signs of many illnesses, including several cancers. They are more often seen in later stages.
8. Unusual vaginal bleeding
Bleeding between periods, periods that are much heavier than usual, and especially any bleeding after the menopause should always be checked by a doctor. Irregular cycles alone, though, are very common and are not a typical sign of ovarian cancer.
9. Pain during sex
Some women with ovarian cancer notice pain during intercourse, often deep in the pelvis. It has many possible causes, such as endometriosis, cysts or infections, all of which are worth discussing with a doctor.
10. Unusual hair growth (rare)
This is not a usual symptom. A small group of rare ovarian tumours, called sex cord-stromal tumours (for example Sertoli-Leydig cell tumours), can make male-type hormones and cause excess facial or body hair, a deeper voice or missed periods. New, rapid hair growth along with those changes should be checked, but most excess hair growth has other causes, such as polycystic ovary syndrome.
Who is at higher risk
Any woman can develop ovarian cancer, but some factors raise the risk:
- Age. It is most common after the menopause; about half of women diagnosed in the US are 63 or older. Younger women can still be affected, including by rarer types such as germ cell tumours.
- Family history and genes. Inherited changes in the BRCA1 or BRCA2 genes and Lynch syndrome significantly raise risk. A close relative with ovarian or breast cancer is a reason to ask about genetic counselling.
- Endometriosis, never having been pregnant, and using estrogen-only hormone therapy after the menopause.
- Excess weight and smoking, which is linked to one particular type.
Some factors lower risk. Contrary to a claim often repeated online, the contraceptive pill does not cause ovarian cancer: taking it is linked to a lower risk that lasts for years after stopping. Pregnancy, breastfeeding and having the fallopian tubes tied or removed are also linked to lower risk.
What happens when you see a doctor
Expect questions about how long you have had symptoms and how often they occur, and a physical examination of your tummy and possibly an internal pelvic examination. Common first tests are:
- A CA125 blood test. CA125 is a protein that is often raised in ovarian cancer, but it can also be raised by periods, endometriosis, fibroids and other conditions, and it can be normal in early cancer.
- An ultrasound scan, usually including a scan through the vagina, to look at the ovaries.
If anything looks suspicious, you will be referred quickly to a specialist; in the UK that is usually within two weeks. A referral does not mean you have cancer. Most women who are checked turn out to have something far less serious.
A tip that helps many people: keep a simple symptom diary for two or three weeks, noting bloating, pain, appetite and toilet trips. It makes the pattern clear to you and to your doctor. If your symptoms continue after a first visit, go back and say so.
Common myths
"A cervical screening (smear) test checks for ovarian cancer." It does not. Cervical screening looks for changes in the cervix only.
"There is a routine screening test." There is currently no screening programme for women at average risk, because large trials have not shown that CA125 and ultrasound screening saves lives. Women at high inherited risk may be offered other options by specialists.
"It has no symptoms." It usually does. The symptoms are subtle, which is why persistence and pattern are the clues.
If something feels different in your body and keeps happening, trust that feeling and talk to a doctor. Early checks are quick, and peace of mind is worth having.
Sources: NHS: Symptoms of ovarian cancer; American Cancer Society: Key statistics for ovarian cancer; Wikipedia: Ovarian cancer. The original ten-symptom list circulated via Healthylifetricks and Idealist4ever.
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