I have had problems in the past adjusting to high dose beta blocker
, e.g., 100 mg of Metoprolol twice a day. In the beginning by BP would go down in the range of 80/65, best I can recall. At those times I was prone to dizziness when standing from a resting position.
To you question, check you BP and HR, do it several times over a period of time. Both of these change and you need to look at what is usually is, not some short term spike numbers.