I Have Been Feeling Chest Discomfort Coming And Going For

I have been feeling chest discomfort coming and going for weeks now fluttering, tightness, anxiety, tired, and now I have a mild cough with very little gunk. It does not increase with activity, I do have some body aches but that would be due to increased activity (yard work). It goes away at night but it seems worse if i lay down in the daytime. I take synthroid 125, I drink strong coffee which I did not drink today, and I have an infected capped tooth. What things could be a potential concern?