if your hose bursted, your brakes wouldn't work at all, because all the fluid is gone.
when you pump the pedal when the car is off, hold it down, and see if it goes down, if it does, your seals insiude youe master cylinder are gone.
get a rebuild kit, if that's the case.
and get it done asap, becuase the more you drive like so, the more damage you can do to the bore inside where the pistons are in the cylinder, and if it is too damaged, you can't rebuild it, and you will have to get a new master cylinder.