I have a sharp pain Under my rib cage. ?

I have had this pain for about 3 months, not constant, happens about once or twice every 2-3 weeks. But it's reallysharp.
And it's on the right side too.

Also I just noticed a lump on my right collarbone. About a month ago, it's hard, fixed, and feels like bone. It's not the left side so that's why I'm concerned,

I don't know if this is anything to be worried about. Thank you!

Oh yeah I'm 20 years old, and female!

Thank you for your time.
 
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