Okay, the sound you hear is known as pulsatile tinnitus and has nothing whatsoever to do with hypertension. When under stress, the muscles and tendons in the neck become tense and produce a tympanic region between the internal carotid artery and the auditory nerve. The result is the ability to hear blood passing through the carotid and a pulsatory or "swishing" sound. The intensity can change with relative changes in muscular tension. It is entirely benign and again, does not suggest high blood pressure. This is a common misconception by people who are experiencing pulsatile tinnitus and it must be remembered that hypertensive states do not generally produce symptoms. The presence of pulsatile tinnitus is nothing to worry about at all. It is not a sign of disease.

The dizziness is likely due to disturbance of the vestibular complex and commonly occurs in persons suffering from anxiety. If by "exercises" you are referring to the Epley maneuver, this is not something that you can perform yourself. Regardless, it is unlikely that otoliths are responsible for your condition. When patients describe dizziness, it's important to gain clarification. If you are experiencing a sudden and brief tilt sensation to either side or feel light-headed, then dizziness would be the appropriate term. If you sense things spinning around you or alternatively that you are spinning, then this would be a sign of vertigo. Anxiety can induce mild dysregulation in the autonomic nervous system and as a consequence, can reduce vagal tone.

Vagal tone is a rather dynamic process and changes as our body is influenced by gravity or stress. In order for you to stand quickly without passing out due to gravity's effect on the blood circulation, vagal tone must be increased to maintain perfusion or adequate blood pressure to the brain. Common examples of sudden decrease in vagal tone would be soldiers who stand at attention for long periods of time, particularly in the heat, or someone who relaxes in a hot tub for too long, or someone who is suddenly frightened. All these examples can produce sudden shift in vagal tone that causes dizziness and in many cases, syncope or fainting.

As a response to this sudden drop, perfusion to the brain is slightly diminished and the affected individual feels light-headed or dizzy. The heart and cardiovascular system respond by increasing cardiac force, which you experience as pounding heart, as the quickest means to increase perfusion to avoid fainting. It is a normal physiological response and does not suggest the presence of disease.

You'll be fine.

Best regards and Good Health

I'll describe one other symptom that has been with me for about a month now. It's a dizzyness when I get up from laying down, or when I tip my head over to the right. I've thought it might be BPPV, but the few exercises I found on the net, have not helped.