Coughing in 15 weeks of pregnancy may be caused by upper respiratory tract infection, allergic cough, bronchitis, etc., and need to take measures to adjust for the cause, such as pay more attention to rest, stay away from allergens, and use medication under the guidance of a doctor. 1. Upper respiratory tract infection: if the upper respiratory tract infection causes pregnant women 15 weeks pregnant with a cough, usually the symptoms are not serious, can not be treated, pay attention to rest. 2. Allergic cough: for allergic cough caused by pregnant women 15 weeks pregnant cough, you need to consult a doctor in time to check the allergens, after the allergens are clear, you need to reduce the chances of contact with allergens. 3. Bronchitis: pregnant women 15 weeks pregnant with bronchitis will also have a cough, the general symptoms are not serious, can not be treated, pay attention to rest. If accompanied by fever and other symptoms, you can use penicillin and other drugs under the guidance of the doctor, the drugs need to be used under the guidance of the doctor. 15 weeks pregnant coughing may also be due to bronchial asthma and other diseases, it is recommended that pregnant women should consult a doctor in a timely manner, the doctor will choose the appropriate measures for the condition of treatment, do not blindly use their own medication, so as not to produce adverse effects.