HAS MY KITTEN GOT HAIRBALL PROBLEM?

MY KITTEN IS 10WEEKS OLD.SHE IS MAINE COON MIX SO HAS ABIT FLUFFY FURR. PAST FEW DAYS SHE HAS BEEN ALITTLE SICK. COULD THIS BE HAIR BALL & WHAT ARE THE SYPMTOMS? sHE BRINGS UP WHAT LOOKS LIKE SPIT WITH NO HAIR BUT SOMETIMES IT CAN LOOK LIKE SICK WITH SOME HAIR?? SOMETIMES IT WITH HAIR & OTHER TIMES JUST LOOKS LIKE SICK. SORRY TO SOUND GROSS.....