1. Causes of fever in pregnant women There are many reasons for fever in pregnant women, which may be caused by viral or bacterial infections such as colds, flu, pneumonia, etc. In addition, pregnant women are more susceptible to bacteria and viruses due to their weakened immunity. 2. The impact of fever in pregnant women on the fetus. Fever in pregnant women will have certain effects on the fetus. High temperatures can cause placental dysfunction, which can lead to