Yes, you may need to go the ER or consult your doctor at the earliest for the chest tightness, as it could be angina, pain due to inadequate supply of oxygen to the heart muscle. Cardiac pain or chest pain can be felt as a tightness and worsens with activity or exercise. This could be more relevant if you are a smoker, are overweight, have a positive family history, are a diabetic and have hypertension. The other causes to consider would be Asthma. An ECG and if needed a spirometry test may be needed to make a diagnosis.
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