tonsillitis/pharyngitis
"Went to the doctor for fever, severe dizziness, and some sinus drainage and sore throat. My flu swab came back negative, so she labeled it as acute pharyngitis, prescribed 5 day Z pak. Less than 2 hours after my first dose, I had horrible, painful diarrhea. I also began to experience severe stomach pain even though I made sure to take it with plenty of food. My symptoms did not improve,  and I began having headaches as well. It is now the day after my final dose, and my sore throat is back, my fever is still high,  head hurts, and I'm dizzy as ever though my stomach is finally feeling better now that I'm out of this useless medicine."