My 3 month old started vomiting yesterday morning, and continued to vomit all day, not immediately after being fed though, and not projectile, but certainly large quantities of white curdy vomit. He is EBF. He did not vomit all night, and has no fever. He had several bowel movements, more than usual, but the same consistency and color (yellow). He seems happy, and is interested in feeding and sleeping. He didn't vomit all morning, but just vomited around noon, and the were some green flecks in his poop. Should I be worried?