Hi !
Thank you for your query.
I think you need to know that it is a side effect of
beta blocker which are known to cause
bradycardia. I think your BP is fine and nothing to worry .
I advise, you should see a cardiologist for this problem and get yourself evaluated.
Hope you are satisfied with the answer.
If you have any further queries feel free to ask.
Wish you good health.
Take care.