10 weeks, BF and she fed quite happily this morning but has absolutely point blank refused the breast ever since - but she's inconsolable and won't stop crying because she's hungry. I've tried expressing and giving her a bottle (even though she won't take one under normal circumstances anyway) but she won't have it. I've tried giving her Calpol as I think she's teething but it's not made any difference. What do I do?