Vaginal bleeding in the first trimester? Don't worry, here's why

As a reproductive gynecologist, I often see patients with vaginal bleeding in early pregnancy clinically, and some have just drawn blood to detect pregnancy, and vaginal bleeding begins to occur; They are also often asked why vaginal bleeding
occurs.
So here is a popular science about the causes of vaginal bleeding in early pregnancy, hoping to help everyone
.

Early pregnancy refers to the period from the beginning of implantation of the fertilized egg to the end of 12 years of pregnancy, which is an important period for the intense differentiation of the fertilized egg to the embryo and fetus, and it can also be said that the fetus "differentiation assembly and formation" period
.
Embryo implantation is not stable until the placenta is fully formed, so many factors can cause vaginal bleeding
.

According to a medical study, more than 50% of pregnant women can survive bleeding in the early stages of pregnancy and successfully continue their pregnancy; About 30% of pregnant women may have a miscarriage; In addition, nearly 10% of pregnant women may have ectopic pregnancy or other problems (such as infection, environment, diet, external stimuli, etc.
).

Some pregnant women worry that vaginal bleeding early in pregnancy can lead to unhealthy
fetal movements.
In fact, many studies have shown that more than half of all miscarriages are caused by abnormalities in the embryo itself, a survival of the fittest screening process
.
If the pregnancy can continue, the fetus is generally normal
.
There are several causes of vaginal bleeding in early pregnancy:

1► Maternal causes

It is mainly caused by uterine disease or progesterone deficiency, as well as immune factors and blood diseases that have been more common in recent years
.
Common uterine diseases include cervical erosion, cervical polyps, cervical cancer, intrauterine infection, congenital uterine malformations, etc.
; Another reason is that during the embryonic development of the endometrium, the endometrium blood vessels proliferate in large quantities, and some of the more fragile small blood vessels rupture and bleed
.
Bleeding of such causes, generally after symptomatic fetal protection treatment, most of them can continue to be pregnant, and the prognosis is good
.

2► The embryo itself is the cause

Such as embryonic chromosomal abnormalities, embryonic dysplasia, etc
.
This situation is related to the quality of seeds, some can continue to conceive after fetal preservation treatment, and some fail to miscarry
after fetal protection treatment.

3►External factors

Such as overwork, excessive stress, sexual life, external impact, environmental pollution, improper medication, smoking, drinking, excessive caffeine or eating other foods that promote uterine contractions
.
Because early in pregnancy, the uterus and pelvis itself are congested, and the blood vessels are relatively fragile
.
Sometimes even mild irritation or even a little movement can cause bleeding
.

4► Ectopic pregnancy

This is when the embryo implants outside
the uterus.
Manifested by slow growth of blood hCG or vaginal bleeding in the first trimester, some vaginal bleeding is similar to menstruation and is easy to ignore.

When an ectopic pregnancy ruptures, it is prone to intra-abdominal hemorrhage leading to shock, which is life-threatening
.
Therefore, in the early stages of pregnancy, it is important to regularly review blood hCG and uterine ultrasound
.

5► Molar pregnancy

Molar pregnancy is a benign chorionic disease that occurs in about 1‰ and is relatively rare
.
It is because the placental villi trophoblasts are abnormally proliferated, and the terminal villi turn into blisters, and the blisters are connected into bunches, resembling grapes, so it is called "molar pregnancy"
.
In the early stages of pregnancy, there will be symptoms
such as abnormal vaginal bleeding, severe morning sickness and even heart palpitations.
Whether it is an ectopic pregnancy or a molar pregnancy, ultrasound examination for early pregnancy is mandatory
.