Due to my now 18mths toddler preference for my right breast, I've stopped nursing him on my left breast 9mths ago. Im totally fine with nursing from just the right breast but lately my boy has been biting during his dream nursing and i wanna give my now sore nipple time to heal. Now when I express my left breast, there's still milk but it looks really thick and creamy and a bit yellowish in color. I know it's probably safe to resume nursing from my left breast but I just need to hear from someone to tell me it's ok and safe for baby as silly I may sound, the word "expired milk" kept flashing in my mind!!