I slept while my blood pressure was up, then i had a bad dream while sleeping and then i woke up from the bad dream in shock because someone had shouted my name to wake me up, as soon as i woke up i started having chest pain, is my heart affected?

So you know your blood pressure is high and it will be higher during a nightmare and yes, chest pain can occur with an acute spike in blood pressure and most often you will have shortness of breath at the same time. Your blood pressure needs to be controlled well and most of the time secondary hypertension is the case at your age. Have you had kidney disease or something else? Take care.