(Concern) Should I continue to receive bladder treatment regularly?

Hello, Cashdoc community members. I have had some issues with my urinary system for a while. I don't drink a lot of water or beverages, but I urinate very frequently. Even after urinating, I feel residual urine, and although it's less now, I used to wake up in the middle of the night because I needed to urinate. Just from hearing this, it seems like a typical symptom of benign prostatic hyperplasia, right? So I went to a well-known urology clinic to get a prostate exam and a urinalysis, and about five years ago, I was diagnosed with an unknown cause of bladder abnormality and was prescribed medication. However, my symptoms still persist these days. That's why I always get nervous whenever I have to travel far, take exams, or attend training. Has anyone else been diagnosed with an unknown cause of bladder abnormality like me?