Aww, congrats mama! That's colostrum, super normal at 36+ weeks, at least that's what happened sa akin din at sa iba pang kaibigan ko, it means your body is preparing na talaga for breastfeeding. Some moms get it earlier, some later, pero the fact na may lumalabas na means you're all set to feed baby once he/she arrives, kaya don't worry! Just gently wipe it off with a clean cloth if you want, and wear nursing pads na lang so hindi humid ang clothes mo or leak through, lalo na pag natulog ka. You're so close na, mama, enjoy these last days!