A few days ago I noticed that my around the right top side of my navel I had some tenderness. This tenderness has continued but not gotten worse. Yesterday I noticed that my navel had a deep purple bruise in it and today that bruise is still there but there is a bruise area that has started turning brown at the top right of my navel on the stomach about 2 inches up. I am taking medicines for coranary artery desease one of which is Licino HTZ. Should I be concerned that this might be a sign of Caput Medusa? I am a 39 yo male.