Indigestion?

Ok so I have this pressure right under my left breast feels like indigestion just not where I normally get it, malox and tums don't help and its not radiating or anything its in the same spot for 2 straight days with no relief. I work at the hospital so one of the girls did a training session on the ekg machine on me and everything shows up fine. My question is does it just sound like indigestion to anyone? I plan on bringing it up to my Dr on Friday to see what he thinks. Maybe just stress?