Is it common for costochondritis pain to vary throughtout the day without activity change? when its dull i hardly notice it, but then i'll get these sharp pains that take my breath away.

YES: The pain can vary with motion, exercise, deep breathing and turning over in your sleep. Usually over the counter antiinflammatory medicine: advil or aleve (naproxen) will help. In women, the use of an athletic or gymnastic bra will give great support and relief.

Not normally: Chostocondritis is usually consistent with activity and minimal at rest.