Taking aspirin during pregnancy may have an effect on the fetus, especially during the last 3 months of pregnancy, and specific medication should be prescribed by a doctor. Aspirin is a common non-steroidal anti-inflammatory drug used to reduce cardiovascular risk factors, reduce the risk of transient ischemic attack, angina pectoris, acute myocardial infarction, prevent stroke, recurrence of myocardial infarction, deep vein thrombosis or pulmonary embolism after surgery, as well as in arterial surgery or interventional procedures. The drug is contraindicated in people who are allergic to the drug or to other salicylates, in people who suffer from asthma induced by the use of such drugs, in people with bleeding disorders, in people with acute gastrointestinal ulcers, in people with severe cardiac, hepatic, and renal insufficiency, in women who are in the last trimester of pregnancy, as well as in women who are in the third trimester of pregnancy, and it is forbidden to combine this drug with amethotrexate. Short-term administration of large doses of this drug before delivery can lead to prolongation of pregnancy, fetal cardiopulmonary toxicity, fetal intracranial hemorrhage, etc., so it is prohibited for women in the last 3 months of pregnancy, in addition, the use of the drug in the first 3 months of pregnancy may lead to fetal malformations, but there is currently insufficient information on the relevant studies. Adverse reactions such as dyspepsia, abdominal pain, increased risk of bleeding (e.g., bleeding during surgery, bleeding gums, nosebleeds, etc.) may occur after use of the drug. Specific use of the drug should be under the supervision of a specialist.