My knuckles sticking out?

in one of my hands my knuckles sticking out it looks like a really large lump like its swollen up or something. i dont think i've banged it. it hurts wehn i touch it or feel it. ive tryed feeling around it feels weird like two bones. it wont just snap back into place. what couldi have done to it? what can i do to make it superior?

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Answer:
go see physician, you could have a fracture or dislocated it or something.

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Answer:
Stop touching it. You might be making it worse by playing around with it.

If it doesn't heal in a couple of days or gets worse, see a physician.

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Answer:
wen u were sleepin u could have hit it on something u probably fractured it get an xray