Pregnancy can be diagnosed by ultrasound only when a gestational sac appears in the uterine cavity.
In the early stages of pregnancy, women can use pregnancy test paper to detect HCG (human chorionic gonadotropin) levels in urine to make a preliminary diagnosis of pregnancy, or go to the hospital to have blood drawn to measure the HCG value in the blood to determine whether they are pregnant or not. If a pregnant woman usually has regular periods, she can confirm pregnancy by checking for a gestational sac in the uterine cavity when she undergoes an ultrasound after her period has been delayed for 35 days.
If a woman confirms early pregnancy through early pregnancy test or blood test, but the ultrasound result shows that no gestational sac is found in the uterus, it is necessary to consider the possibility of ectopic pregnancy, and it is recommended that the pregnant woman should consult a doctor as soon as possible for examination, and terminate the pregnancy in time to avoid hemorrhage if necessary.
Women should undergo regular checkups after pregnancy to monitor their own health and that of the fetus, and if they feel unwell, they should consult a doctor in time.