Hi ! Welcome to the community and thank you for your question. I know a new diagnosis can be very overwhelming. Stage 3a is one of the stages of chronic kidney disease. Here is an article that explains it: https://chronic-kidney-disease.net/early-stage. And then one about CKD stages overall: https://chronic-kidney-disease.net/stages. When is your nephrologist appointment? I hope you'll get some answers when you meet with them. Thinking of you, Minel (Team Member)