I woke up yesterday with a pain on both sides of my back that almost felt like soreness. When i would try to take a deep breath it would almost knock the wind right out of me. As the day went on the pain grew into constant pain. As of today the pain is worse & has also added pain under my rib cage in the front part of my body. Last night when I went to bed I had chills on & off & was unable to get much sleep due to the pain.Im worried what this might be & with the long holiday weekend, Im not sure if this is some sort of infection that I need immediate attention.