I'm having this awful throbbing in the middle of my back left side. sometimes hard to get out of bed. if i touch it hurts bad. what's wrong?

Many reasons : Your symptoms and history is too broad . It seems that your pain is quite severe . You should see a physician at the earliest as it can be anything from muscle or ligament pain to inflammation or infection in the spine, lungs, pleura or the kidneys.

See your doctor: You need to be examined and have a history and physical taken. Possibly x-rays depending on duration and severity of your symptoms. With that very general description it could be many things.