My son is 14 months and I still BF at night time. Over the past couple of months he has begun to bite me as he finishes his feed. I have tried stopping him from falling asleep at the breast but he screams untill I put him back on. I have tried 'punishing him' by refusing to feed. There is no point telling him 'No' as he is asleep...Today he actually made me bleed....Please, has anyone got any advice?