Wheezing for three months is a chronic symptom that requires a formal medical evaluation rather than self-medication. It could indicate underlying conditions such as asthma, COPD, or allergies. You should consult a doctor or pulmonologist who will likely perform a spirometry (lung function) test to determine the exact cause. Depending on their findings, they may prescribe quick-relief bronchodilators (like Albuterol) to open your airways, or daily controller inhalers (like inhaled corticosteroids) to reduce inflammation. Please do not start any lung medications without a prescription. Seek immediate emergency care if you experience severe shortness of breath or blue lips.