Taking aspirin in mid-pregnancy may lead to abnormal blood clotting and cause bleeding gums in the long term, but not usually in the short term. Aspirin is a kind of anticoagulant, may cause the patient’s coagulation function is weakened, but also lead to the clotting time as well as the prolongation of prothrombin time. Taking aspirin for a long period of time, once there is gum damage or gingival inflammation in the case of taking aspirin, when brushing teeth bleeding may lead to increased bleeding or prolonged bleeding time. However, if aspirin is taken only in mid-pregnancy, it is usually for a shorter period of time and is not a major cause of bleeding gums. Common adverse reactions to aspirin include nausea, vomiting, diarrhea, drowsiness, dizziness, and headache, and it is contraindicated for aspirin allergy, hemophilia, and thrombocytopenia. The use of aspirin carries certain risks, and patients need to get the guidance of a specialist.