I have a sore chest inbetween my breasts and feels tender to touch. feels like its bruised. pain intensifies when i press on the area?

First of all: STOP PRESSING on it!! You may have inflammation of the small cartilages which allow your chest to be FLEXIBLE (to allow you to BREATH IN AIR!) This is a common problem. Apply ICE Packs and try WARM packs and ALTERNATE (see which helps more!) Take IBUPOROFEN 400 mgm every 6 hours and if the pain continues after a few days of above ...see your PCP (Primary Care Provider) for possible xrays Z