How long can I determine the early pregnancy in the uterus? We need to divide it into "intrauterine pregnancy" and "early pregnancy" to understand.
Intrauterine pregnancy refers to the pregnancy in the uterus, which belongs to normal pregnancy, indicating that the fertilized egg has been successfully implanted and settled in the mother's uterus. "Intrauterine pregnancy" is relative to "ectopic pregnancy", which refers to abnormal pregnancy implanted outside the uterus (common tubal ectopic pregnancy, ectopic pregnancy must be terminated). Because ectopic pregnancy is harmful to the health of the mother, it is impossible to continue this pregnancy, so many pregnant mothers want to confirm whether it is "ectopic pregnancy" or "intrauterine pregnancy" when they check their pregnancy for the first time.
And "early pregnancy" means that pregnancy is in the "early pregnancy" stage. Generally speaking, pregnancy is divided into three stages in medicine: early pregnancy (within 0/2 weeks of pregnancy/kloc-0), middle pregnancy (0/3-28 weeks of pregnancy/kloc-0) and late pregnancy (29-40 weeks of pregnancy).
If you have the word "early pregnancy" on your B-ultrasound list, it means that you are still pregnant within 12 weeks. Generally speaking, if you are pregnant for about 5 weeks, you can check whether there is a baby in the uterus by B-ultrasound, so as to diagnose "intrauterine pregnancy".
"Early intrauterine pregnancy" can only prove that the small seed has found fertile land, but whether the seed will germinate and continue to grow, we have to continue to observe whether there will be "germ" and "fetal heart" in the later stage.
Generally speaking, germs can be seen at 6-7 weeks of pregnancy. In other words, normal menopause lasts for 50 days, that is, more than 50 days of pregnancy, and B-ultrasound can show embryonic germination. At the 49th day of pregnancy, when the embryo is 2mm in diameter, the primitive heart tube beats and becomes humanoid at the beginning of the 8th week of pregnancy. If you can't see the embryo and primitive blood vessels beating after 8 weeks of pregnancy, it may be embryonic dysplasia, suggesting the possibility of abortion. Germ is an important index to judge whether the fetus develops normally in the first trimester. If there is no germ after 49 days of pregnancy, we should consider the possibility of abortion.
How long can I get pregnant by B-ultrasound? The first thing that appeared was that my period didn't come. If there is no stomachache and vaginal bleeding, I will wait 40 days to go to the hospital. Today, B-ultrasound can determine whether it is intrauterine pregnancy or ectopic pregnancy. B-ultrasound should not be too frequent.
Under normal circumstances, B-ultrasound examination can only be carried out about one month after pregnancy. Because the gestational sac can only be seen by B-ultrasound after 5 weeks of pregnancy, the detection rate of gestational sac at 6 weeks of pregnancy is 100%. Embryos can be seen at 6-7 weeks of pregnancy, protocardia can be seen at 49 days of pregnancy when the embryo diameter is 2mm, and it is humanoid at the beginning of 8 weeks of pregnancy.
However, the B-ultrasound examination is too early, because the gestational sac is too small, and the observation may not be clear, resulting in inaccurate examination results. In addition, not every doctor can see the B-ultrasound examination too early. The more you do, the better. Therefore, experts suggest that it is best to avoid doing B-ultrasound prematurely or repeatedly.
If women find that menstruation is delayed 10 days, they can go to the hospital to do B-ultrasound to determine whether they are pregnant, and then take different measures according to the specific situation. However, at this time, the size of the embryo can't be seen by B-ultrasound, but in another week or so, the embryo can be clearly seen. If it is confirmed to be intrauterine pregnancy, it is best not to do B-ultrasound casually.
At present, it is recommended to have normal B-ultrasound examination 3-4 times during pregnancy, but if abdominal pain, vaginal bleeding, frequent fetal movements and unclear fetal position occur during pregnancy, B-ultrasound examination should be carried out as appropriate according to the doctor's examination. Too many times will have a certain impact on the fetus. If the fetus develops normally, there is absolutely no need to do too much B-ultrasound.