As you woke up with the chest hurting, you may have had a heart attack and this could have been why you had that dream.
Because you were asleep, the physical symptoms would have experiencing could have been interpreted into your dream.
Because you woke up with chest pain, I suggest you make an appointment to see your doctor and get your heart checked out.
Hmmmm ok could my stress have been caused my Nightmare also?
Possible. That did cross my mind.
If you do keep getting the symptoms it is wise to get it checked out by the doctor.
Ok Thank You very much :)