A pregnancy of more than 20 days is still in the very early stages of pregnancy. At this stage, the fertilized egg has only just combined and has not entered the uterine cavity, and the changes in the hormone levels in the pregnant woman’s body are not yet particularly pronounced, so most pregnant women generally do not have any reaction when they are 20 days pregnant. Subsequently, as the duration of pregnancy increases, some symptoms will slowly begin to appear, such as fatigue, drowsiness, nausea, dry heaving, loss of appetite, and a part of the patient will have breast swelling, slight discomfort in the abdomen. Usually you have to wait until your period is delayed to check if you are pregnant, you can do a urine test or draw blood for the test. Normal early pregnancy reactions, most of them begin to appear around six weeks.