How to distinguish between periods and pregnancy precursors

The easiest way to distinguish between periods and pregnancy precursors is to check HCG levels to determine whether you are pregnant. You can also determine whether you are pregnant by measuring your body temperature. If your body temperature remains high for several consecutive days, you may be pregnant. After pregnancy, women will not menstruate. After menstruation stops, they can go to the hospital for B-ultrasound examination and blood test to judge whether they belong to normal intrauterine pregnancy. After pregnancy, they should go to the hospital regularly for relevant pregnancy examination.