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is an emergency situation and it causes respiratory arrest almost in many of the case.It is lethal in many cases.So its unlikely you have had an embolism.It should ve been a chest infection
.Hope you visited your Chest Physician and get treated.
It is needed to know the emergency of evaluating a breathlessness or chest pain
.No matter how severe or simple it is , or what might be the cause , when you are breathless or having chest pain , you should visit ER and rule out cardiac event if any.
Hope my answer helped you and all.