A pregnancy test with a pregnancy stick is not always accurate and may be a false positive. It may be a false positive. It may also be a pregnancy with an ectopic pregnancy or a miscarriage, which results in vaginal bleeding similar to menstruation in the patient after half a month. The pregnancy result detected by a pregnancy test is not always accurate and the test taker may not be pregnant. Since pregnancy tests are affected by many factors, there is a possibility that the test may show a false positive, resulting in an incorrect result. This is why there are cases where a pregnancy test is detected by a pregnancy test, but the person’s period comes back half a month later. If you get your period half a month after you are pregnant, it may be due to vaginal bleeding for various reasons, rather than actually getting your period. For example, in most cases of ectopic pregnancy, vaginal bleeding occurs when the lining of the uterus is shed. It may also be a sign of miscarriage after pregnancy due to various reasons. Therefore, patients are advised to go to the hospital for ultrasound and other detailed examinations to clarify the specific situation and then follow the doctor’s instructions to choose the right treatment.