My daughter has turned 4 months old on 27th december'14 and she is completely on breast feed. We got her quadravac vaccine on 25th dec'14 and right from 26th she started passing loose motion. She has passed it 8 times in a day. The stools are yellowish, slightly sticky and curdy. It is not smelly, the baby is active and no fever. Mother also has no health problems.
What could be the reason? What action should we take now?