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Off medicines , blood pressure can shoot up.High blood pressure
shows symptoms like headache , dizziness
.The chest pain
you are experiencing could be any cardiac origin or due to hypertension
or due to spicy food you ate causing gastric disturbance.
I advise you to visit a Cardiologist , get a regular cardiac checkup done to be on safe side.Please donot skip hypertension tablet , when you skip accidentally , eat salt less food that day.