A teenager who took medication for what she believed was the flu hoped to make a swift recovery, but she never imagined it would uncover an allergy that would leave her hospitalized. For around two weeks, Mollie Lock, 18, had a lingering cough that she simply couldn’t shake. While it was frustrating, Lock told Newsweek that she "thought nothing of it" and presumed it was just a normal case of the flu. As the cough didn’t show any signs of improving, Lock, from the U.K., made an appointment with