I'm a bit worried because last night I had some breathing troubles and felt pain on the left side near my armpit. I went to see a doctor, and although my vitals like blood pressure and pulse were normal, he suggested an ECG, which also turned out normal. I have spondylitis, so I was wondering what tests or checkups I should consider next? Any advice would be really helpful.

Having a pain, heaviness or discomfort in your chest can be scary. It does not always mean that you are having a heart attack. There can be many other causes, including Other heart problems, such as angina Panic attacks Digestive problems, such as heartburn or esophagus disorders Sore muscles Lung diseases, such as pneumonia, pleurisy, or pulmonary embolism Costochondritis - an inflammation of joints in your chest Some of these problems can be serious. Get immediate medical care if you have chest pain that does not go away, crushing pain or pressure in the chest, or chest pain along with nausea, sweating, dizziness or shortness of breath. Treatment depends on the cause of the pain. To rule out cardiac issues. Get a ECG and 2D echocardiography done. If they are normal then get a TMT stress echo done.. Meanwhile take Tab. Flexon Mr twice a day for 5 days