I know you can have nausea with a MI (heart attack). Symptoms vary from person to person and could include tightness or maybe tingling in your chest neck, jaw, arm or back, nausea or a feeling of heartburn. Its always best to call a doctor and get an EKG and blood work
See a doctor if you experience any chest pain. Not all problems that cause chest pain will affect blood pressure. Plus, there are so many possible causes it that it will be impossible to get an answer on here. Doctors will look at other signs and symptoms in addition to the chest pain to help narrow down the cause. Hope this helps!