If you are 4 days short of menstruation, clinically you will not have the corresponding symptoms even if you are pregnant, because the early pregnancy reaction occurs because the trophoblast cells start to secrete blood HCG after the fertilized egg is laid, and the estrogen and progesterone in the body rise, so that the corresponding early pregnancy reaction will gradually appear. The majority of women will have early pregnancy reactions only after 45 days of menopause, such as nausea, vomiting, anorexia, dizziness, drowsiness, weakness and other corresponding symptoms. If you are 4 days away from menstruation, the fertilized egg is not in the womb, so there are no symptoms.