Would getting a catheter just for diagnostic purposes be an option? Not even knowing what you’re dealing with must be unbearable. These are like period panties, but in sweat pants form. The whole thing is absorbent and leak proof. Not the cutest, but 🤷‍♀️ You can wear them with the leak proof panties. dryment.com/products/ I’m so sorry you’re going through this, I hope you find resolution soon.