Found a hard lump on the bone of my sternum- concerned?

I’m a 22 year old female and today I noticed for the first time a small lump (about the size of a pea) near the centre of my chest. It feels like bone and is on my sternum. It’s only on one side and I’m certain it wasn’t there before (at least not since a few weeks ago). 

I’ve never had any serious physical health conditions but cancer does run strongly in my family.

Should I be worried and get it checked out, or is it likely just a weird bit of bone growth?

Parents
  • UPDATE

    its over a year later. I never went to the dr about this and I'm completely fine. Please don't take this as "it's also probably nothing for me, I'll be fine"- please go see your doctor if you're ever concerned! In my case I think I just have a bit of a boney sternum which I'd never noticed 

Reply
  • UPDATE

    its over a year later. I never went to the dr about this and I'm completely fine. Please don't take this as "it's also probably nothing for me, I'll be fine"- please go see your doctor if you're ever concerned! In my case I think I just have a bit of a boney sternum which I'd never noticed 

Children
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