Hi thanks for asking question. Here are few possibilities in your case. You might have chest pain because of respiratory infection.It could be simple cold ,or sore throat like viral infection.Because of excess mucus and secretions blockage may feel.chest pain can occur as constitutional symptom. Second bronchitis like obstructive lung disease also has to be ruled out if smoking history present.chest x ray or spirometry for pulmonary function test useful. CBC also done.if show neutrophilia then bacterial infection could be probability and antibiotic needed. Here if you have acid reflux or ulcer like condition then reffered chest pain can occur.omeprazole needed for it. If congestive symptoms present decongestant or antihistaminic taken.steam inhalation useful with eucalyptus. Drink more water. To rule out cardiac cause ECG done. Finally although here it seems to be less chance , muscular strain can lead to chest pain.simple analgesic useful for it. I hope my suggestion will helpful to you. Dr.parth