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The symptoms you mentioned shows the picture of angina
she should go to er and get ECG done. Angina is chest discomfort
that occurs when there is decreased blood oxygen
supply to an area of the heart muscle. In most cases, the lack of blood supply is due to a narrowing of the coronary arteries as a result of arteriosclerosis
Angina is usually felt as:
This pain often radiates to the neck, jaw, arms, back, or even the teeth.
aching across the chest, particularly behind the breastbone.
Wish you good health