Most of the ointments contain some ingredients to activate blood circulation and remove blood stasis, such as musk and safflower, which are irritating to the uterus and may cause miscarriage or premature birth, and the ointment may contain lead, which may be absorbed through the skin if the pregnant woman applies the ointment and cause abnormal fetal development. If you feel unwell, you need to go to the hospital for examination and apply medicine for treatment under the guidance of the doctor, do not use medicine blindly to avoid affecting the growth and development of the fetus. If you have back pain during pregnancy, you don’t necessarily need to treat it. Most of the conditions that occur during pregnancy are physiological, caused by the pressure of the gradually increasing fetus, physiological back pain is not necessary to treat, usually pay attention to rest. The instructions of the cream are generally marked with the words prohibited for pregnant women, so pregnant women can not use the cream.