Hi Andy,
The heart rate and blood pressure thing can be a roundabout situation. You're anxious so it goes up and you're anxious about it going up plus a few side effects .
Good news about some sleep .
You might want to look into a local relaxation class - yoga - tai chi - meditation which will help all facets of this.
Take care
Meg
Anxiety is a thin stream of fear trickling through the mind.
If encouraged, it cuts a channel into which all other thoughts are drained.
Robert Albert Bloch