Ay, normal lang usually yan sa third trimester, pero depende talaga sa dami at kung may amoy or itch, a few of us pregnant moms noticed yellowish discharge especially pag nakatulog lang kami ng matagal or dehydrated, kaya drink more water talaga! If it's just a little and walang iba pang symptoms, usually okay lang, pero I'd still suggest checking with your OB next visit just to be safe, especially since you're already nearing the end ng pregnancy. Better peace of mind, diba?