Mama, I'd really suggest checking with your OB about that one kasi the color change from white to yellow-green on your panty isn't something I'd just brush off, it could be normal pero it could also be a sign ng infection or something that needs attention talaga. A few of us mums experienced similar and ang aming doctors said it's better to get checked agad than worry, lalo na kung may smell din or itchy feeling. Don't stress pero better safe than sorry with discharge changes, alam mo na!