The cost of a blood test for HCG is approximately$100, and a special hormone called chorionic gonadotropin, or HCG for short, is secreted after pregnancy and doubles with the number of days of menopause. For women with regular menstrual periods, a vaginal ultrasound can monitor the gestational sac at around 35 days of menopause, a fetal bud at around 42 days of menopause, and a fluctuating fetal heart at around 49 days of menopause, when the fetus is truly alive in the uterus. If the patient does not have the requirement to have children, within 49 days of menopause, in principle, medical abortion can be performed; while if the number of days of menopause is greater than 49 days, it is recommended to perform abortion directly.