I did not stutter once today

I did not stutter once today 19M with a stutter that got severe at university , yesterday I was prescribed phenibut + propranolol and I took a pill of propranolol in the morning along with 250 mg of phenibut and I cannot belive it , I have not stuttered the entire day , I can not really be angry as I am insanely relaxed , Even if I try to have a panic attack or think about bad moments it simply has no effect , it feels like the volume has been turned to 0. Now I do not know how this will affect university but I will see on monday. Note: I am not a doctor so please understand that everyone has a different reason for having a stutter.