My baby has intermittently this afternoon had long crying spells (20-60 min) where she also refused to nurse, even though regularly she would nurse at that time. She has no fever. She is 3 months old EBF. She's been a breastfeeding champ till now. We had one episode of this a few days ago, but now 2 today. She's also a very mellow, easy baby, so this is VERY odd for her. Ideas? I'm thinking gas or teething? I don't know what to do to fix this.