Hi there i can understand your concern. Your symptoms could be due to low blood pressure, that is, hypotension. So get your blood pressure checked once. Sometimes even low sugars, that is, hypoglycemia can cause such problems. So get even blood sugars levels checked. For acidity take pantoprazole 40mg once in the morning half hour before your breakfast for one week. Avoid spicy foods. Have bland foods only like curd rice. Consult general physician for further evaluation.