There are several ways to diagnose whether you are pregnant or not: 1. Blood test, a normal egg starts to settle around 7 days after fertilization and then secretes chorionic gonadotropin. With the increasing number of days of pregnancy, the level of chorionic gonadotropin is increasing, as early as 10 days after fertilization, blood test, if the HCG value is greater than 10mIU/ml, can be diagnosed as pregnant.2. Urine test, you can use the early pregnancy test paper, according to the guidelines of the instructions for self-testing, if after the urine test, the test strip appears on the test strip of the two parallel red lines, it means that the pregnancy has been.3, Ultrasound, as early as 35 days of pregnancy, ultrasound can find fetal buds, about 49 days of pregnancy can find fetal heartbeat. Ultrasound is the most accurate way to detect pregnancy. Besides diagnosing early pregnancy, ultrasound can also identify ectopic pregnancy and gravida.