It's a cruel disease that kills thousands of women each year.  

Yet attending screening tests can drastically cut the risk of getting cervical cancer, experts say.

The screening, known as a smear test, can spot abnormal cell changes that can then go onto trigger cancer.

To mark cervical screening awareness week, MailOnline is focusing on some of the well-known, and less-so, symptoms of cervical cancer to watch out for.

Lisa Jacques, lead specialist cancer nurse at online cancer resource Perci Health, said unusual vaginal bleeding is a key sign to watch out for.

If you have regular periods, an example of unusual bleeding could be bleeding between periods, she said.

Other unusual vaginal bleeding can include heavier bleeding, bleeding during or after sex, or bleeding that results in fatigue and dizziness.

Ms Jacques said another warning sign could be bleeding after the menopause has occurred and you have stopped having periods.

Abnormal bleeding can occur because cancerous tissue and its blood vessels are fragile and bleed easily. As it spreads, healthy tissue can also become damaged and bleed. 

However, there are many reasons you have unusual bleeding and it may not be cancer.

Other possible causes include hormone imbalance such as poly-cystic ovary syndrome (PCOS), structural abnormalities in your uterus such as polyps or fibroids, sexually transmitted diseases, or a range of other health problems.

You should see your GP if you have any unusual bleeding. 

Changes to your vaginal discharge 

While vaginal discharge is normal, a change in colour, thickness and odour could potentially indicate the disease.

The NHS says healthy vaginal discharge is clear or white, thick and sticky, slippery and wet and does not have a strong or unpleasant smell.

But a tumour can disrupt the internal lining of the vagina from producing this healthy discharge.

Cervical cancer can see it turn foul-smelling and pink, brown or bloody, Ms Jacques said.

The change in colour can be a sign of blood within the discharge, while a smell and chunks of tissue within it can be as a result of the tumour becoming infected. 

However, bloody discharge does not mean you have cancer as it can occur close to a period, while ovulating or during pregnancy. And a foul smell could instead be a sign of bacterial vaginosis.

Pain or discomfort during sex 

Ms Jacques said another common symptom of cervical cancer is experiencing pain or discomfort during sex.

According to Flo, a period tracking company, this pain can be felt in different ways. such as sharp, shooting pain, a burning sensation or cramping. 

If your cervix is inflamed, which can happen during cancer, the pressure of sex may be painful. 

Pain during sex could however mean a variety of health problems, such as an infection, the menopause, genital irritation or allergy from soaps or condoms, endometriosis, pelvic inflammatory disease, irritable bowel syndrome or fibroids.

Lower back or pelvic pain 

Lower back pain and pain between your hip bones (pelvis) are commonly experienced during menstruation.

But they could also be a sign of cervical cancer 'when there is no obvious reason for it', says Ms Jacques.

The pain is often caused by a tumour pressing on bone, nerves, or organs.

NHS guidance also states that pain in these areas can be a symptom of cancer and adds that you should also look out for tummy pain.

Lower back pain does not necessarily mean you have cancer and could be as a result of other health conditions or an injury. 

Urinary problems   

A lesser-known symptom of cervical cancer can be urinary problems, such as a frequent need to pee.

Valentina Milanova, founder of Daye, a women's health company, said: 'The cervix is located underneath the bladder, so it's likely that any irregular cervical growths, such as tumours, will have a direct impact on your bladder. 

'As a result, cervical cancer can sometimes impact a woman's urinary habits, causing them to pee more frequently.'

Ms Jacques also says blood in your urine, loss of bladder control, persistent urinary tract infections (UTIs), and 'any other changes to your bladder habits' can be symptoms. 

Urinary problems can also be caused by infections, pregnancy, childbirth, what or how much you have had to drink, enlarged prostate or menopause, among many others.

Constipation or other bowel problems

Cancer Research UK says bowel problems can also be a warning sign of cervical cancer.

It says: 'Sometimes cancer can grow so that it completely blocks the bowel. The waste from the food you have digested can't get past the blockage.'

The charity says this blockage can cause symptoms such as feeling bloated and full, vomiting, nausea, constipating, trapped wind and pain.

Bowel problems can be a sign of other mild illnesses or simply what you have eaten. 

Leg pain and swelling  

Ms Jacques said leg pain and swelling is another lesser-known symptom of the disease.  

Cancer Research UK says cervical cancer can spread to the lymph nodes in the area between the hip bones. 

You can also develop tumours in your pelvic area which then press against the pelvic wall, causing pain. 

Other causes of leg pain include injury, blood clots, poor circulation or varicose veins.

Leg swelling could also be as a result of being overweight, being pregnant, eating lots of salty food or taking certain medications. 

Unexplained weight loss 

Ms Jacques claimed that unexplained weight loss is another sign to look out for. 

Moffitt Cancer Center's advice page said: 'Like many other cancers, cervical cancer can cause a loss of appetite. 

'Additionally, weight loss may be a problem regardless of the amount of food consumed.'

When suffering from cancer, the immune system has to work harder and the body produces small proteins called cytokines — which may lead the body to burn calories quicker than normal and break down fat and muscle.

However, unexplained weight loss can mean a variety of things, such as mental health conditions, digestion problems or other health conditions.