I SPAT A SMALL (ONE INCH) SOLID GOOY MUCOUS MASS DARK RED FROM MY THROAT - DO NOT KNOW IF IT CAME FROM LUNGS, THROAT OR REGURGITATED FROM STOMACH. I HAD EATEN TUNA FISH SHORT TIME BEFORE. IS THIS A RESIDUE OF THE MEAL OR MIGHT HAVE BEEN DISLODGED FROM AN INTERNAL WOUND OR SOMETHING? WHAT COULD THIS GUNK BE?