I just started pumping this week. I noticed today that some of my milk that I pumped this morning had lumps in it. It has small curdles in it. This is the first time I have noticed this. I have noticed in the past that my baby will spit up some of these curdles. Does this mean my milk is bad. It smells fine. Also, I accidently poured some freshly expressed milk into a container of cool milk in the fridge without cooling it first. Do I need to throw this container away now?