Toddler biting

Ok, over the past few days my toddler has become unbelievable! I used to love that he was teething and getting all those toofies in his mouth and now I just want to pull them all back out again! I think due to his lack of vocabulary and complete frustration he's biting ME! And he knows just where to make it hurt (ie, under the arm, inside the arm etc.) I don't know what I'm going to do with him! When he doesn't bit he bashes his own head into the floor! I swear he carefully puts himself down on his hands and knees, backs his head up and bashes it down on the floor. Totally looking for attention. It's much easier to ignore him hurting himself rather than when he's hurting me!

I think we're pretty far from 2yrs old but we're approaching the terrible twos as warp speed! Ugggg...save me!! :)