Oh Erin! SOOO sorry you were in the hospital with this crud! It just went through our entire family. I missed a full 5 days of work and am on week three and just now starting to feel better. Husband and son also had it. Husband missed a week of work as well (on doctor's advice) and is still a mess - pinched a nerve in his neck with the coughing.
I hate to say it, but nothing helped more than sleeping, keeping hydrated, and running a humidifier. The doctor said it just has to run its course - fluids and Delsym for the cough is what he told us. For us running its course was a full 2 weeks, then still the lingering cough and exhaustion. We did use honey. We also used Vicks vaporub topped with a warm cloth to help with the cough at bedtime. I know - stuff smells terrible and is disgusting but we were desperate for some relief.
Hang in there girl! And be sure to take care of yourself!