I once went to the doctor for a sinus infection. She gave me a script amoxicillin and sent me home.

Two days later I had horrible diarrhea, and started to add blood, sometimes significant. Went back to the doctor, "It's just an inflammation from the antibiotic, this will help," and gave me another drug.

For days this went on.

So, I turn to Dr. Google, learn about Clostridioides difficile. I go back to the doctor, demand a test.

And what do you know? The test revealed C. Diff.

A new drug, and 2 days later, and back to normal.

Of course, the doctor did not admit fault. The doctor said I got the infection because I live in an unclean home, and got it there.

I told her fuck off and never went back.