Im A 52 Year Old Man. Since The Last Few

Im a 52 year old man. Since the last few days, I see red mixed with my urine. It peaked at one day when it was at its darkest. The last couple of days, I see pink at the end of urination, every time I urinate.
In the past ten years, I had blood in my urine that lasted about two to three days - started red the first day, then brown and then cleared. I had about four separated events, in the last ten years. This time, it's been about one week that I still see blood. I also am suffering from sciatica that start last week when I moved a certain way.
Any advice would be appreciated.
Robert