Hi, You have unproductive coughing for over a month and are in third trimester of pregnancy avoiding medicines, urine leakage during bouts of coughing. First of all you have to find the cause of such a cough which is normally due to allergy to something that you can only find by close observation as to which factors, foods, beverages that are instigating or enhancing and should be avoided. Avoidance of such things itself will get you cured and thus no medicines may be needed. ENT Surgeon s opinion for any postnasal drip, condition of pharynx and larynx. investigations of blood, X-ray of chest with protective lead sheet for abdomen. All these helps to get us a proper cause and thus having direction for pregnancy-safe medications that can be started under the guidance of your Gynecologist. Since this is third trimester of pregnancy there are some medicines that can be prescribed safely. Take steam inhalation. Watch or the irritants in house like mold, mildew and fungus and get these cleaned up professionally. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. T. Chandrakant, General Surgeon