Reactions to pregnancy vary from person to person. Some pregnant women have no abnormal reactions throughout early, middle and late pregnancy and are relatively calm. Some pregnant women start to have early pregnancy reactions at 6-7 weeks of pregnancy, such as nausea, vomiting, anorexia, chest distension, irritability and drowsiness, or a mild cold. If a woman does not use contraception and has these symptoms, it is important to seek medical attention in time to avoid affecting the embryo’s implantation. Especially for women who have poor menstrual regularity or no early pregnancy reaction after pregnancy, carefully observe menstruation. If you do not have early pregnancy reaction when menstruation passes or if you have a slight early pregnancy reaction, you need to go to the hospital in time to check blood HCG and ultrasound at an early stage to determine the size of the fetus, and project the last menstruation and expected delivery date through HCG and ultrasound. Content source: Dr. You Lai