How many days can ultrasound detect pregnancy?

B-ultrasound is a test that is often done during pregnancy. Pregnant women must be familiar with this test. B-ultrasound can effectively check the health of the fetus. If the fetus has deformities, underdevelopment and other conditions, it can be clearly seen through B-ultrasound examination. So how many days can be spent on B-ultrasound during pregnancy? During early pregnancy, because the test tube embryo is relatively small, only an image similar to a fetal bud in the gestational sac can be seen under color ultrasound examination, which is called the fetal bud fetal heart. It takes about 40 to 50 days to see the embryo bud and fetal heartbeat during B-ultrasound examination.

Therefore, B-ultrasound examination can be carried out between 40 and 50 days of pregnancy. Pregnancy ultrasound examinations usually need to be done at least every two weeks.

If your period has not come yet beyond the expected time, you can determine whether you are pregnant by testing urine HCG or blood HCG. However, simply relying on the HCG value cannot distinguish whether it is an intrauterine pregnancy or an ectopic pregnancy, nor can it distinguish the state of embryonic development. Therefore, B-ultrasound examination is the fastest and most accurate way to distinguish the early stages of pregnancy, determine intrauterine and extrauterine pregnancy, the baby's development status, and the gestational age.

What can be checked by B-ultrasound during pregnancy

Taking into full consideration the possibility of ectopic pregnancy and a short period of amenorrhea, some pregnant women need to observe the gestational sac through vaginal B-ultrasound to determine whether the pregnancy is intrauterine, whether the test tube embryo is alive, and its quality.

Between 11 and 14 weeks of pregnancy, some hospitals will perform a nuchal translucency scan (NT). It is mainly used for pregnant women with recurrent miscarriage and miscarriage of unknown cause, as well as older pregnant women or women who have had children with chromosomal abnormalities. The purpose is to see whether there are manifestations of chromosomal abnormalities in the fetus.

For pregnant women with high-risk factors during pregnancy, such as gestational hypertension and gestational hyperglycemia, B-ultrasound tests should be performed more frequently. If you are worried that your child will be affected, you can consult your doctor about the time of each ultrasound test. The actual time will depend on the umbilical cord blood flow, amniotic fluid of the pregnant woman, and fetal heartbeat.

During the pregnancy, pregnant women need to have an ultrasound examination every month, so that they can accurately see whether the fetus in the belly is in a healthy state. When the fetus shows abnormal conditions, parents can find a more suitable fetal care plan with the help of a doctor. B-ultrasound examination can be performed between 40 and 50 days of pregnancy, and at least every two weeks.