If you feel that there is always sticky phlegm in your throat, you should pay attention to your diet and rest, eat more fresh vegetables and fruits, drink more water, and try not to eat stimulating and spicy food. Reduce the number of times you speak to reduce the irritation of the throat, and you need to pay more attention during pregnancy. However, the symptoms are more serious, and if the sputum is yellow and more abundant, you need to treat it actively with effective antibacterial drugs. If there is no allergy, cephalosporins or penicillins can be used. These drugs do not have great side effects and have less impact on both the pregnant woman and the fetus, and can be correctly applied orally under the guidance of a physician. If you are allergic to such drugs, you can also use Chinese medicine, which is not very irritating.