puss, blood coming from sceptic cut, finger looking blue on pad, very sore, using iodine ,been about 5 days ??

Blood blister apeared after about 3 days under the nail, my finger went hard & red, very sore to touch, then it started weeping puss &,blood. Ive been using iodine and keeping it covered. Noticed today my forefinger pad has a blue tinge to it, cut seems to be just under the nail
Still very sore & weeping, cant bear to use it. Also been using Savlon.