The reaction to pregnancy occurs after about 42 days, which is calculated from the time of the last menstrual period. If you subtract the 14 days of follicle development, it means that the reaction occurs more than 20 days after intercourse. Due to the increased level of chorionic gonadotropin in the woman’s body at this time, some women may experience chills, dizziness, general weakness, in addition, they may also experience nausea, vomiting in the morning, hate eating greasy things, and have a decreased appetite, which are symptoms caused by the hormones in the woman’s body that lead to slower gastric emptying and slower gastrointestinal motility. Because of the enlarged uterus, some women may experience the symptom of always wanting to urinate. Some women may feel an increase in breast size, which is caused by the increase in estrogen and progesterone levels in women’s bodies after pregnancy, resulting in the development of breast ducts.