I'm sitting here feeding my 11 month old to sleep and my left breast just above the nipple is really painful, I'm dreading changing sides, it started about half an hour ago. That boob feels warmer than the other but not too full. It's making my toes curl and he's not even feeding from it. What can I do? He's started resting his teeth on me when he feeds but also is very active whilst feeding all day but there's no mark. Please help!