Re: Bony lump on the sternum end of the clavicle.
Hi scared88. For much of my adult life (I'm 55 now) I've been overweight and up until this year, obese. I've slimmed right down now which means I can feel my bones for the first time in many years. I was rather concerned about the lower portion of my sternum though, that appeared to end with thicker bone. I mentioned this to my Dad, who said he'd had a similar obsession with one of his ribs at one time. He is long past caring and is now 91.
So I thought to myself, if my Dad can have a rib that didn't 'feel right' and yet live to be 91 (and still largely independent), I'm sure I can accept my body as not perfectly symmetrical. As Fishmanpa said above, that's how our bones are. There's nothing wrong with your bones, they're quite normal.
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'It was a wedding ring, destined to be found in a cheap hotel, lost in a kitchen sink, or thrown in a wishing well' - Marillion, Clutching at Straws, 1987