HI My Name Is Mel. I Recently Had My Second

HI My name is Mel. I recently had my second case of a very serious blood infection ,MRSA, this time it was on the left side of my heart on my tricuspid heart valve. I was diagnosed the first time in October 2014 and the second time in May 2015. I have bruises on my thighs from IV drug use. I remember having these bruises as far back as JAN / FEB 2015. Not only are the bruises at the injection site but they also seem to continue the path of various veins and are inches long. I have tried using the topical homeopathic remedy known as Arnica gel. I believe I am borderline anemic but no longer have this blood infection nor any symptons ( to my knowledge ) of any infection. Would you please explain why these brusies have yet to heal and what options I have for remedies. Thank You very much for your time.