If there is an increase in vaginal bleeding when taking the antiretroviral pill, it is not caused by the drug itself. It is possible that in early pregnancy when preterm miscarriage occurs, most of them are caused by chromosomal abnormalities of the embryo, and in clinical practice, even with the use of antiretroviral pills, the success rate of antiretroviral is relatively low, and there will be a continued increase in vaginal bleeding, and in clinical practice, miscarriage may eventually occur. If this happens, ultrasound examination should be done to find out whether the fetus is developing normally through ultrasound examination. If the pregnancy is already 8 weeks old, the primitive heart tube beat can be seen through ultrasound examination. If the primitive heart tube beat is not seen through ultrasound examination, the embryo may have stopped developing and it is recommended to give a comprehensive analysis in combination with the blood HCG and progesterone test, and if necessary, the pregnancy needs to be terminated.