Alalay-Dios, mama, this is definitely something that needs the specialist's care, please don't delay that pediatric nephrologist appointment, okay? This is beyond what any of us moms can really advise on, and your baby needs the right doctors monitoring closely.
I know it's scary to get news like this during pregnancy, honestly. A few of us in my mum circle have gone through unexpected prenatal findings, and the waiting and worrying is the hardest part. But you're doing the right thing by getting referred to a specialist, they'll have the real answers about what this means for your baby and what happens next.
Fingers crossed for you, mama. Reach out to your OB anytime you have questions or feel anxious, and lean on your partner and family right now. You're not alone in this.