Endometriosis may be a common condition where tissue that behaves just like the lining of the womb (the endometrium) is found outside the womb.These pieces of tissue are often found in many various areas of the body, including: • The ovaries and fallopian tubes • Outside the womb • The lining of the within of the abdomen • The bowel or bladder The condition is estimated to affect around 2 million women within the UK. Most of them are diagnosed between the ages of 25 and 40.Endometriosis is rare in women who are through the menopause. Symptoms of endometriosis Endometriosis may be a long-term (chronic) condition. Symptoms can vary significantly from person to person, and a few women haven't any symptoms in the least . The most common symptoms include: • painful periods or heavy periods • pain within the lower abdomen (tummy), pelvis or lower back • pain during and after sex • bleeding between periods • difficulty getting pregnant Most women with endometriosis get pain within the area between their hips and therefore the tops of their legs. Some women experience this pain all the time. Other symptoms may include: • persistent exhaustion and tiredness • discomfort when getting to the rest room • bleeding from your back passage (rectum) or blood in your poo • coughing blood – in rare cases when the endometriosis tissue is within the lung