If a pregnancy is found during taking deer fetus cream, the drug itself will not affect the development of the embryo, so the patient can continue the pregnancy as long as she has a pregnancy requirement. Deer fetus cream is a herbal medicine that tonifies Qi and Blood, disperses cold and regulates menstruation, and it itself can nourish the kidney, so it helps the patient to get pregnant. Moreover, deer fetus cream is not toxic and is not a blood-breaking medicine, so it does not have any effect on the development of the embryo and the patient can continue the pregnancy. However, once the patient finds out that she is pregnant, she should stop taking deer fetus cream in time, because the medicinal properties of deer fetus cream are warm, and the patient’s body constitution is hot after pregnancy, if she continues to take it, it may lead to excessive yang energy in her body and depletion of yin and blood, which may lead to sores on the mouth and tongue, dry mouth, yellow urine and other manifestations of yin and blood deficiency.