Check interactions with other medications & even supplements if you take any..
Be clear with the Dr about all other things you take..are you still taking Valium?
There is a risk of interactions..
Propranolol Drug Interactions - Drugs.com

We do have the useful sticky threads with tips and various info links..
Diaphragmatic breathing is calming & there are many other self help ways to slow & calm the mind & body.. you tube shows many ways..
Anxiety, bumps, symptoms , treatment info links

Anxiety can manifest in elevated heat rates and many other odd ways..I hope your Dr suggests some of the non medication techniques also..