Possible genetic kidney issue

I have had kidney issues my entire life. As a child I spilled alarming amounts of protein in my urine. As a child no other kidney problems at all. Fast forward to adult. Several times I have developed a kidney infection and an abscess but I'm unaware that I'm sick until I'm septic. I end up being hospitalized and iv's of fluids and antibiotics are my main course of treatment. My theory is that I'm the one in ten women who don't have any symptoms when they have bladder infections. Since I don't know when I have a bladder infection then left untreated it makes it's way up into the kidney where an infection festers. Then an abscess forms because of an undiagnosed kidney infection. (I read this on the Internet.) Okay those are my kidney issues.

Recently, I met some relatives on my paternal side for the first time. Guess what? My first cousin's kidneys failed and they don't know why. Also, I believe that others have some kidney issues too. It sounds like there is a possible genetic weakness here with the kidneys. How do I go about finding out what's wrong with me and therefore possibly diagnosing a genetic issue for others?