How to determine if there are early pregnancy symptoms

How to judge whether the early symptoms of pregnancy. General menstrual regularity, 28 to 30 days menstrual cycle, pregnancy six weeks or so, menstruation does not come ten days or so will show vomiting, lethargy, fatigue, greasy food and other early pregnancy reaction. Show this early pregnancy reaction is pregnant, and there is no menstruation, so it is recommended to show this situation to the hospital to draw blood, check progesterone hcg, do color ultrasound to see if the baby has no pregnancy sac in the uterus, there is no package outside the uterus. If the blood hcg value is normal, color ultrasound intrauterine pregnancy sac, is normal baby growth and development. If the hcg value is low, intrauterine pregnancy sac, this situation is afraid of ectopic pregnancy.