Why does a woman have blood in her urine after sex?

Some women have many symptoms of discomfort after sexual intercourse, most of which are caused by diseases, while some are normal physiological phenomena. So why is there a little blood in women's urine after having sex? The patient should first observe the severity of the bleeding, and then diagnose it based on physical symptoms, medical history, etc. At this time, the presence of blood may be physiological, or it may be caused by disease or other reasons. The specific reasons are explained below.

1. Physiological reasons

1. Most of the bleeding during female sexual intercourse is caused by organic diseases of the reproductive system, and only a few are caused by rough male movements or improper sexual intercourse. The first night of marriage; the first sexual intercourse, bleeding due to rupture and damage of the hymen, generally the amount of bleeding is small, only a few people have thick hymen, and the man's movements are too rough, which can cause more bleeding.

2. In elderly women, due to atrophy of gonads, the secretion of sex hormones decreases, the vagina atrophies, the vaginal epithelium becomes fragile, the tissue becomes fibrotic and lacks elasticity, the vaginal exudate becomes less and becomes dry, and rough movements, forced insertion, and improper sexual intercourse during intercourse can also cause vaginal injury, rupture of blood vessels and bleeding.

3. For pregnant women, during the first and last three months of pregnancy, sexual intercourse stimulates the cervix, causing violent contractions of the uterus and bleeding during sexual intercourse. A small number of women even suffer miscarriage or premature birth as a result. Special attention should be paid.

4. Vaginal hypoplasia, narrow or deformed vagina. Rough movements during sexual intercourse may cause lacerations of the vaginal wall or posterior fornix, resulting in vaginal bleeding.

5. Organic lesions in the female reproductive tract can often lead to bleeding during sexual intercourse. For example, vulvar ulcers can cause friction on the ulcer surface during sexual intercourse, causing pain and bleeding. Vaginitis is caused by the massive shedding of the vaginal epithelium and congestion of the vaginal mucosa. During sexual intercourse, the penis thrusts and rubs in the vagina, causing damage, rupture and bleeding of the vaginal mucosa. The urethral caruncle grows at the female urethral opening. Because of its brittle texture, the slightest touch during sexual intercourse can cause bleeding. Cervical erosion is caused by the exfoliation of the epithelium around the external os of the cervix, which exposes the fragile subcutaneous tissue and forms an eroded surface. During sexual intercourse, the impact of the penis causes bleeding. Due to the infiltration of cancer cells, cervical cancer tissue becomes fragile and often causes contact bleeding during sexual intercourse. The urethra and vagina are adjacent to each other. When the urethra is inflamed, it is easily squeezed and injured during sexual intercourse, causing bleeding.

6. Virgin. Because there is a layer of flesh membrane during the first sexual intercourse. Sexual intercourse will pierce. It will bleed.

2. Causes of the disease

1. Cervicitis (erosion). 90% of married women suffer from cervicitis. Cervicitis is divided into three types: mild, moderate and severe according to the degree of cervical erosion. For patients with moderate or severe cervical erosion, the rubbing of the cervix by the glans of the male's penis during sexual intercourse may cause injury and bleeding. Because the amount of bleeding is small, it does not flow out immediately but accumulates in the vagina, and the color of the blood changes from fresh to old. Therefore, when the blood flows out the next day, it is dark red.

2. Endometriosis. Some endometriosis grows on the cervix and appears as blue-purple nodules. If this blue-purple ectopic nodule is touched during sexual intercourse, it will cause bleeding. The amount of bleeding is generally small and dark red, and abdominal pain often occurs after intercourse.

3. Sexual intercourse injury. A common site of sexual intercourse injury is the vaginal foramina, which can sometimes cause a foramina several centimeters long. In severe cases, it can reach the peritoneum or penetrate the peritoneum into the abdominal cavity. Some people mistakenly believe that pressing some gauze on the vulva or using some menstrual paper will stop the bleeding, but in fact this does not help. Therefore, if this happens, you need to go to the hospital for examination and treatment as soon as possible. The gynecologist will take appropriate treatment measures according to the specific situation, such as inserting gauze into the vagina for compression or using intestinal sutures to stop bleeding.

3. Other reasons

1. Abnormal cervical development: Abnormal cervical development is a sign of cervical epithelial cell cancer. Having multiple sexual partners, having intercourse before age 18, becoming pregnant before age 16, or having a history of sexually transmitted diseases can increase the likelihood of abnormal cervical development. It is usually treated by performing a cold surgery.

2. Chlamydia infection: The viral infection is usually transmitted through sexual intercourse and with sperm, vaginal fluid or blood.

3. Gonorrhea: a sexually transmitted disease caused by a virus. This disease can be cured by many medications.

What's going on when women have a little blood in their urine after having sex? This article analyzes the causes of bleeding. Patients should not worry about the harm of the disease after finding the symptoms. If the amount of bleeding increases, they must go to the hospital for examination. At this time, the patient should undergo B-ultrasound examination, urine test, etc. Various examinations can accurately determine the disease of the body. Patients should be prevented from pathological bleeding. Blood streaks will cause increased bleeding, and the harm will increase.