I have pain in the upper middle of my chest. dull ache for the past 3 weeks. increased with arm movement, bending, deep breaths. bearable but annoying?

Chest discomfort: This type of chest discomfort emanates from the rib cage-probably a pectoral muscle or the joint between the sternum(breastbone) which may be slightly inflamed or strained. A lung cause is not likely. Treatment consists of avoiding any strain and, if you can take them), anti-inflammatory medications like Advil or Aleve. If discomfort persists see your physician for evaluation.