The first and foremost symptom of pregnancy is the cessation of menstruation, and most people do not show anything special for ten days of pregnancy. However, some pregnant women may experience symptoms such as breast pain, small abdominal discomfort, easy fatigue, nausea, vomiting and increased leucorrhea due to changes in hormone levels in the body. Therefore, if a woman usually has regular periods and her period is delayed for more than a week and still does not come, she may be pregnant and needs to be examined to clarify the situation. In this case, you can take a blood test or use early pregnancy test paper to determine whether you are pregnant. The early pregnancy test is a test paper that shows two red lines, which indicates that you are pregnant. In addition, most people will cause early pregnancy reaction, such as drowsiness, vomiting, dizziness and weakness, only around 45 days of pregnancy. Moreover, under the joint stimulation of estrogen and progesterone, the breasts will gradually grow and the color of nipples and areolas will gradually deepen. Therefore, if a woman of childbearing age has the above symptoms after having intercourse without contraception, the possibility of pregnancy should be highly considered and should be taken seriously.