Only Friday I Punched A Punching Bag With No Gloves

Only Friday I punched a punching bag with no gloves an it got swollen Saturday morning an Saturday night it got really bad that it got to the stage I couldn't move it , so I went the hospital on Sunday morning today an got an ex Ray the doctor said my middle finger could be broke so then he got the ex Ray back an he said it looks fine but he will have to show the specialist tomorrow an they will ring if it is could this be broke??