My 11 month old has recently started to clamp down on my nipples with his four razor sharp teeth so hard it's unbearable. I dread BF now. He thinks it's funny. I get SO angry that level of pain my immediate reaction is to scream and lash out I can't even control it I don't want to upset or hurt him but he just won't take a bottle or a cup. I'm so upset by all this any tips or advice please :(