Hi I have been having dizzy spells for the past ten days, probably 10 - 15 episodes I in a 24 hour period, I feel light headed drowsy, they last a few minutes then pass. I can be resting, sitting down, standing or even lying down when they happen. I am in good health otherwise, I have monitored by blood pressure at work and it is around 102/77, when I go dizzy it reads 62/58, then gradually goes back up, can you advise.