The body is unable to show specific detectable symptoms after the union of the sperm and egg.
Fertilization occurs within a few hours after ovulation, usually no more than 24 hours, and it is impossible for the human body to detect specific symptoms during the process of fertilization and in the short period of time after fertilization.
Pregnancy should be considered in healthy women of childbearing age with a history of sexual intercourse who normally have regular menstrual cycles and should be highly suspected once menstruation does not come on time, especially if it has stopped for more than 10 days.
At about 6 weeks after menopause, symptoms such as chills, dizziness, salivation (drooling), fatigue, lethargy, lack of appetite, acidophilia, aversion to grease, nausea, morning sickness and so on, are called early pregnancy reaction, and some of the patients have mood changes, which disappear on their own at about 12 weeks after menopause.
Therefore, only after a period of time after the combination of sperm and egg, and in the bed after the start of formal development, the human body will have a specific notice. In the early stages of pregnancy, pregnancy can be determined through early pregnancy test paper and related hormone tests.