If your mouth is bitter in early pregnancy, first of all, you need to pay attention to drinking more water because the body temperature increases slightly after pregnancy and more water evaporates through the skin, so if the ambient temperature is high and your body lacks water, you will easily have bitter mouth. If the symptoms cannot be improved by drinking more water, you should be alert to the fact that the concentration of bilirubin in the blood increases due to biliary stasis after pregnancy, so you may have bitter mouth.