Hi

So i was new to pumping and didn’t know that certain parts of the pump can be disassembled. I pumped with that for like two months, gave the pumped breastmilk to my baby for his first two months. I then realised one day while cleaning that those parts (the valve one) can be disassembled for cleaning. And when I opened em they had milk fat residues which were like maybe building for two months 😭😭😭

Would this have harmed my baby? He is 4 months now?