How do I get rid of my sore throat, cough, pain when swallowing food, and ear ache?

Sounds like a virus. Time, rest, fluids, and patience will generally resolve thtese symptoms. If they persist, then it might be worth a visit to your doctor, but these are both incredibly common and entirely self-limited. Treat pain with Acetaminophen or motrin, and try some warm tea for soothing your sore thorat.