There is no clinical term for the 2nd day of pregnancy. If it refers to the 2nd day of intercourse, there is usually no reaction because at this time, even if the sperm and egg unite to become a fertilized egg, the body will not show any reaction because the hormones in the body have not changed significantly because the egg has not yet been laid. If a woman is successfully conceived, she will usually experience early pregnancy reactions around 6 weeks after menopause, that is, around 42 days after conception, which may manifest as dizziness, fatigue, drowsiness, lack of appetite, aversion to oil, nausea, morning sickness and other symptoms. Some pregnant women have mood changes, which mostly disappear on their own around 12 weeks of menopause, and the exact time varies from person to person. If a woman is planning to get pregnant, she can start taking folic acid supplements during the preparation stage, which are used to prevent fetal neural tube defects. Normal pregnancy reactions in early pregnancy do not require special treatment. If the early pregnancy reaction is severe and the pregnant woman cannot eat, she needs rehydration treatment.