Aww first-time mama, congrats! Ang discharge during pregnancy is super normal talaga, kaya don't worry, but ang intense itching like na hindi ka makatulog, that's worth checking with your OB para ma-rule out yeast infection or other stuff, kasi sometimes ang betadine alone doesn't cut it if may infection na. A few of us moms had the same thing and turned out we needed actual treatment from the doc, hindi lang wash lang! Fingers crossed it's something minor na easily fixable, pero better safe lang especially pag sobrang inconvenient na sa sleep mo. You've got this, mama!