question: i am a 36 year old male (pretty healty, 225lbs, 6'5") and have noticied a meaningful weaking in my urine stream over the last couple of years.  this has been followed by some wave like changes in my fingernails and occassional aching in my genital area.  I have been tested for stds and those have come back clean, wondering if I have some kidney/bladder related issue that wouldn't show up in a simple urine test.