Hi! My son is 4 months old and he usually poops every 2-3 days. His stool has been normal color and consistency until tonight. He had no color in his stool at all tonight. There were only a few strings of mucus and it smelled very fishy. I am worried. It's late and I can't sleep because of it. He doesn't have a fever. I am not sure if has been fussier or not. He pooped 3 times today altogether/ 1- yellow and pretty thick , 2- greenish and looser, 3- mucus with fishy smell. He is exclusively breastfed. No other food, formula, water.