Chest tightness. Stress or tension in!

I have been diagnosed with ISB due to severe anxiety around 2 years back. A chest x ray revealed some swelling in the chest area. Although ECG and blood tests were normal. Now, i regularly exercise and have a decent diet. I'm under a lot of stress or tension in regards to my personal life and professional life. I have started to feel my chest heavier as the days go by and it hurts when i lie down like as if I have bricks on my chest. Turning from one side on the other makes it hurt more. I feel slightly nauseated sometimes and a slight discomfort in the jaw lines. Sometimes the chest heaviness feels like it's on the sides as well. Internally it feels very heavy. Is there anything else I should consider getting done? Tests or consultation?