No one knows your body better than you. I recommend to keep a diary of your day to present to your doctor. Take your blood pressure several times per day. Keep track of how much fluid you drink to the ounce. How many times per day you urinate and the color of your urine. All circumstances surrounding your dizziness. Before or after you eat. What you have eaten. When you sit or when you stand. Your exercise level. Do you have any other symptoms. Numbness, tingling, pain of any kind. Write it all down and present your diary to your physician. As many and concise things you keep track of, all will help your physician. Blessings.