Metallic taste in the mouth in early pregnancy may be due to hormonal changes, poor oral hygiene, the impact of medication, etc. 1. Hormonal changes:After pregnancy, especially early pregnancy, some pregnant women due to changes in hormone levels in the body, the sense of taste will appear abnormal changes, the mouth may appear a variety of strange flavors, such as metallic taste. 2. Poor oral hygiene:If pregnant women don’t have the habit of brushing and flossing regularly, gingivitis, periodontitis and other dental infections may lead to a metallic taste in the mouth. 3. Drug effects:If a mother-to-be takes antibiotics and other drugs during pregnancy, her saliva will have a metallic taste after her body absorbs these drugs. Metallic taste in the mouth in early pregnancy should be checked in time and treated under the guidance of the doctor.