Three years ago, I had a pulmonary embolism on my lung. It was treated with Herceptin (sp) and warfarin tablets. After the treatments ended, I felt something travel from the location of the embolism to the side of my left chest . every so often I feel a soreness in the area of my upper left side, then the soreness goes away for a long time and then the area will be sore again, My dr says my heart is working fine, do I have a problem here