Oh mama, I totally understand kung bakit ka worried, breast changes can be scary, lalo na kung first time mom ka pa lang! Honestly, this is something na kailangan mo talaga ipakita sa OB mo agad, kasi may maraming reasons why may discoloration or lumps, and some need proper checking to be sure everything's okay. A few of us mums have had similar scares before, and every time it turned out to be something manageable once the doctor assessed it, but you really can't know without that checkup. Don't stress yourself too much in the meantime, ha, just book that appointment asap and bring a list of your questions so the doc can explain everything clearly to you.