On and off mid chest pain and mild ear pain. throat feels like it's tightening ?

Allergy or infection: It's hard to determine the cause of your problems. More history is required. You're either developing an upper respiratory tract reaction or you may be suffering from an allergy or anaphylaxis. If you are experiencing shortness of breath or throat construction or tongue swelling please call an ambulance as it may be life threatening otherwise go your nearest urgency care clinic for examination

If your throat feels: like it's tightening, especially if that's a new symptom, please call 911 and get to your nearest emergency room. If this is a more chronic symptom, along with the chest pain and ear pain, it could be infection or allergy. You should still see your doctor to evaluate this and get treated properly.