Some people may experience a small amount of vaginal bleeding after the fertilized egg has implanted in the endometrium, and may also have symptoms such as breast swelling, fatigue, nausea, vomiting and frequent urination, but this cannot be used as an accurate basis for determining whether the egg has implanted and conceived. If the menstrual cycle is regular, menopause may occur. If the menopause lasts for more than a week, it is best to go to the hospital to have blood tests for human chorionic gonadotropin and progesterone levels, which are more accurate, sensitive and reliable.