Very true. One must advocate for oneself!
Just now I had a Mohs procedure on my face. I asked about antibiotics and they told me that they only prescribe antibiotics if the procedure is done on the leg where there is more risk for infection.
I go to Mayo for my lung issues, and I cannot risk pneumonia. I had a suspect pneumonia in January, and it was late Friday, so my PCP gave me 7 days of antibiotics.
After when I talked to my Pulmonologist at Mayo, he put in his notes that if I need to take antibiotics, to also take Vancomycin at the same time.
They have reduced the number of days for antibiotics from 10 to 7 or even 5 days. That should help.
You could talk to a Specialist about ideal Vancomycin prescription if at risk of C-diff and show that to your other doctors