hi. I have a some unexplained bruising. A week ago I discovered a bruise on my ribcage region just below my breast bone. It is the size of a jaffacake. It is getting a darker shade of purple everyday. I am pretty sure i havent banged myself as its a strange place for a bruise. Not sure of its relevant but I ve been getting a lot of discomfort under my armpits as well as itching. Generally feel ok though.