Open Question: Sharp and painful back-ache for 2 days straight!?

Okay, so I started experiencing my back ache Sunday morning when I woke up. I thought I had slept poorly or something and didn't really think much about it...but now its Tuesday and my back pain is worse! Its a sharp pain located on my middle-left side and it really hurts whenever I bend down or even LOOK down. I have also noticed that my left shoulder is MUCH lower than my right shoulder and