The main symptoms of 12 weeks of pregnancy are dizziness, weakness, weakness of limbs, nausea and vomiting when smelling greasy food, especially acidic food, sudden desire to eat something but no appetite when it comes time to eat, vomiting before the food you just ate is digested, and stomach pain and bloating if the early pregnancy reaction is serious. Depending on the individual’s constitution, some people do not have obvious symptoms in the early stages of pregnancy, and generally the bulging uterus can be felt above the pubic symphysis. Most of the symptoms that occur in early pregnancy are physiological and will improve after 12 weeks, so it is recommended not to use drugs indiscriminately.