Aw hi mama! White discharge is super normal sa pregnancy, lalo na as you get closer to your due date, a few of us pregnant moms have the same thing and our OBs said it's just your body preparing. But since you're also having belly pain na parang dysmenorrhea, I'd really suggest checking in with your doctor soon lang, kasi they'll want to rule out anything like contractions or other changes na need monitoring especially this close to May 23 na. Basta kung bigla-biglang intense ang sakit or may bleeding, go to the hospital na agad ha!