Pregnant women need to apply for a medical card at the hospital after three months of pregnancy, and then undergo corresponding examinations every month. Especially during the later stages of pregnancy, it is necessary to have a check-up once a week. The prenatal examination items are determined based on the size of the fetus. If there are any problems with the examination, amniocentesis is also required. Pregnant women need to undergo four ultrasound examinations throughout their entire pregnancy. Can ultrasound detect how many weeks of pregnancy?
Pregnant women undergoing ultrasound can determine the size of the fetus, and based on the duration of amenorrhea, they can determine how many weeks the fetus is. Ultrasound has certain radiation, so it is not good to do it too early. If the HCG value of pregnant women doubles normally and the progesterone value is also normal, it is best not to undergo ultrasound during the first three months of pregnancy to avoid affecting fetal health.
If the doubling of HCG is not successful, it may be an ectopic pregnancy, which can be diagnosed through ultrasound examination. The pregnancy time of pregnant women is generally calculated based on the end of the last menstrual cycle, and each woman's menstrual cycle is different, so this calculation method has some differences. Using ultrasound to calculate the gestational age of the fetus will be more accurate.
In general, getting an ultrasound can tell how many weeks pregnant a pregnant woman is, but pregnant women should pay attention not to have too many ultrasound scans to avoid affecting the health of the baby. Pregnant women should pay attention to dietary hygiene, eat more nutritious foods, and avoid spicy and greasy foods.
