Can intrauterine pregnancy and ectopic pregnancy be diagnosed by ultrasound?

Patient's question:

I'm about 6 weeks pregnant, but recently I've been feeling uncomfortable in my stomach, and my lower abdomen is also bloated. My friend said that when pregnant, it's necessary to go to the hospital to diagnose whether it's an ectopic pregnancy or an intrauterine pregnancy. Ectopic pregnancy is quite terrifying, and both ectopic and intrauterine pregnancies can be clearly diagnosed with ultrasound. Is that right? Is it done directly with an ultrasound?

Doctor's answer:

For intrauterine pregnancy and ectopic pregnancy, a detailed ultrasound examination is required, combined with blood hCG and clinical diagnostic symptoms to make a diagnosis. In cases of a normal and regular menstrual cycle, a detailed ultrasound examination can be performed around the 6th week of pregnancy to check for the presence of a gestational sac in the uterine cavity. The presence of a gestational sac in the uterine cavity can diagnose an intrauterine pregnancy. If no gestational sac is found, blood tests to measure hCG should be conducted in conjunction with clinical diagnostic symptoms to determine if it is an ectopic pregnancy. A timely diagnosis of ectopic pregnancy requires prompt treatment.

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