Generally speaking, if there is no fetal heartbeat in the fifth week of pregnancy and the condition is good, there is no need to take a tranquilizer injection, but if there are symptoms of miscarriage, it is necessary to follow the doctor’s instructions to maintain the pregnancy. Women with regular menstrual cycles can see a round or oval gestational sac in the uterine cavity during ultrasound examination at the fifth week of pregnancy, which can confirm intrauterine pregnancy. However, at this time, due to the short duration of pregnancy, when the general condition is good, you can follow the doctor’s advice to repeat the ultrasound examination after one week, most of which can see the fetal buds and fetal heart. However, when abdominal pain, vaginal bleeding and other symptoms of pre-eclampsia occur in the fifth week of pregnancy, and progesterone and blood HCG (human chorionic gonadotropin) levels are low, it is necessary to follow the doctor’s advice to give progesterone and other medications to protect the fetus. Early pregnancy due to the development of the embryo is not stable, must pay attention to appropriate rest, prohibit coitus, avoid heavy physical labor, continue to take folic acid according to the doctor’s instructions, and increase dietary nutrition. If you are in good condition, you can have an obstetric examination according to the doctor’s instructions. During pregnancy, pay attention to rest more, at the same time should relax, avoid tension, anxiety, any discomfort should be timely to the hospital, by the doctor to clarify the diagnosis, and cooperate with the doctor to deal with the symptoms.