My wife had open-heart surgery 3.5 weeks ago to replace her aortic valve. Since then the recovery has come along extremely well. Heart rate and activity are doing well and she has been in less pain. Perhaps 4-5 days ago, she was running a slightly elevated temperature for a few days and the surgeon s PA had blood work done - which came back fine with no elevated white blood cell count. However, this morning she awoke with a new pain in her chest. It appears to be located on the left side, slightly below and to the side of the breast - kind of in a rib cage area. It isn t severe, but it is definitely there and it appears to be worse when she breathes deeply at all. She has had a slightly elevated temperature again tody, between 99.2 and probably 99.9 (although our temperature gauge tends to return considerable variance between ears and between monitoring). How concerned, if at all, should we be? Should we be monitoring anything else in particular?