Generally, ectopic pregnancy can be ruled out through one's own symptoms and signs.

Firstly, through one's own clinical symptoms, if pregnancy has been confirmed by a urinary pregnancy test and the patient does not experience abdominal pain, abnormal vaginal bleeding, or other such conditions, but does experience significant early pregnancy reactions like nausea and vomiting, the likelihood of an ectopic pregnancy is small. It can generally be judged to be an intrauterine pregnancy. However, self-diagnosis is not very accurate, and ultimately, it depends on an ultrasound to see the intrauterine gestational sac to confirm whether it is an intrauterine pregnancy.

Therefore, the most scientific method is to go to the hospital for an ultrasound and have a blood test for HCG. This method is more scientifically accurate. If an ectopic pregnancy is confirmed, surgical treatment must be pursued immediately as it can be life-threatening.