Negative pregnancy indicates no pregnancy, negative pregnancy is generally determined by the following methods: 1, urine HCG test: when the menstrual period is delayed, you can go to the hospital, through the urine pregnancy test that is urine HCG test, test whether pregnancy, or self-test with early pregnancy test paper, the results are negative, indicating that the temporary not pregnant. Because of its test time is too early, can be shown as false negative, if necessary, need to retest to ensure the accuracy of the test results; 2, blood HCG test: blood HCG test, HCG value in the normal range, did not appear elevated, this result shows that the temporary not pregnant, that is, pregnancy negative. However, the test time is too short from the time after coitus, blood HCG elevation is not obvious, there can be false negatives, need to wait a few days for a review, to clarify whether it is pregnancy or delayed menstruation. If the results are negative after checking blood or urine HCG, but the patient still suspects pregnancy, ultrasound can be performed around 6 weeks after menopause to clarify the presence or absence of a gestational sac, and the diagnosis can be confirmed.