Since yesterday he's been clamping down on my nipple and pulling back and it's really painful. Is there anything I can do to stop this? Breastfeeding is going so well and I'm still exclusively breastfeeding. He's doing it sometimes to have a look about and just not letting go but also just now he's done it again but just pulled his head back and looked at me grinning. I know he's not doing it on purpose and he was just smiling at me normally but it still hurt! I really don't want to give up breastfeeding yet so I'm hoping someone can help us here.