What Causes Blood In Urine And Discomfort In The Lower Back?

For over a year I ve had small traces of blood in my urine, told I was ok. I m having discomfort in my lower back that spreads to where my kidneys are and up around my hips into abdominal area. I ve found at least 12 tumors that are right beside my rib cage and down into my stomach. Tumors are on both sides of ribs and also in my back ribs. I have had pain in my legs, hands,knees,shins, calfs,elbows and hands. No burning or pain when I urinate. Any clue what s going on and where to start to find out.