Suggest Treatment For Dizziness And Low Bp While Suffering From Thyroid Problem

I have recently been waking up in the night with the room spinning for about 15 seconds and then it disappears. When I awake in the morning and sit up on the side of the bed I also get the same result. I have been on Thyroid medication for a number of years that I take upon awakeing in the morning. I have been feeling sluggish and tired for the past week or so as well. I feel like my blood pressure drops for no reason.... Any ideas that I can try at home before I make an visit to my Doctor's office?