The fastest way to detect pregnancy is through blood hCG after 10 days of intercourse. If you check urine, it will be relatively late, and you need to delay your period for about a week before you can test it. The blood hCG test is the earliest and most accurate way to test whether you are pregnant or not. If you have intercourse and are pregnant, blood hCG usually starts to rise 8-10 days after sex, so the earliest you can confirm the diagnosis is 10 days after intercourse. The level of human chorionic gonadotropin in urine by urine test must reach at least a certain concentration, the early detection rate is low, the error is large, and it is easy to miss the diagnosis if you drink more water or have a shorter pregnancy. Blood hCG is a peripheral venous blood draw, which is more accurate and precise because it is a quantitative test. Urine hcg is a qualitative test. After pregnancy, women all show changes such as breast swelling, tenderness, slight itching, obvious protrusion of nipples, darkening of nipples and areolas, and fear of cold. The symptoms are related to the increase of hormone levels in pregnant women, which cause many women to feel significant discomfort, but most of them do not require special treatment. In addition, pregnant women often experience different physical manifestations such as increased urination and growing pains in the uterus.