What is the reason for bright red blood appearing in the third month of pregnancy?

What is the reason for bright red blood appearing in the third month of pregnancy?

Many women will have bright red blood in the third month of pregnancy. When people have this situation, they are quite panicked, and they are afraid that it is caused by some problems with the fetus in their abdomen. In fact, there are many reasons for this situation. It may be caused by some gynecological diseases or placenta previa. The following is a detailed introduction to what is the reason for bright red blood in the third month of pregnancy?

What is the reason for bright red blood in the third month of pregnancy?

Generally, the main symptom of threatened abortion is a small amount of vaginal bleeding after pregnancy. Depending on the amount of bleeding and the time it accumulates in the vagina, the color may be bright red, pink or dark brown. It is sometimes accompanied by mild lower abdominal pain, a feeling of falling when the fetus moves, and back pain and abdominal distension.

Suggestions: It is recommended to do a B-ultrasound to check the condition of the uterine gestational sac and check the progesterone value. If it is relatively low, medication should be used to preserve the pregnancy and avoid affecting the fetus.

The normal attachment site of the placenta is on the posterior, anterior or lateral wall of the uterine body. If the placenta is attached to the lower part of the uterus or covers the internal os of the cervix and is lower than the presenting part of the fetus, it is called placenta previa. Placenta previa is one of the main causes of bleeding in late pregnancy and a serious complication during pregnancy. Improper handling can endanger the life safety of mother and child. It is more common in multiparous women, especially multiparous women.

Placenta previa bleeding is caused by the gradual stretching of the lower uterine segment in late pregnancy or after labor, the disappearance of the cervical canal, or the dilation of the cervix, while the placenta attached to the lower uterine segment or the internal os of the cervix cannot stretch accordingly, causing the previa part of the placenta to detach from its attachment point, causing the blood sinuses to rupture and bleed. The initial bleeding amount is generally not much. After the blood at the dissection site coagulates, the bleeding can stop temporarily. Occasionally, there are cases where the initial bleeding amount is large. As the lower uterine segment continues to stretch, bleeding often occurs repeatedly and the amount of bleeding increases.

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