Hey tc, I dont take a beta blocker as yet - but my thought reading your post was that it could be your beta blocker...even though it is at a low dosage. There are many people who have reported similar side effects as you described here. And even still many more people who just cant tolerate them at all. I have found a few links on this medication where you can read up on it and see what you think.
Let us know how your doing. http://www.bystolic.com/