I've recently come down with some sort of sinus, bronchial infection. dr put me on amox. and prednisone. my energy is still horrible, my body still a?

Normal reaction: The body's normal reaction with any type of infection, viral or bacterial and others, is to fight back and that requires use of energy as your body is consuming more energy than it would at normal state. The good news is that your body now has help with the medication. Over time, you'll start to feel better. Good health.

Repiratory: Infections, whether upper or lower are generally caused by viruses, are self limiting and usually resolve with supportive care, (warmed fluids, cool mist humidifiers, hydration, anti-inflammatories and rest) in 2-3 weeks.