Can blood in semen be due to bloody urine? had hematuria few months ago( got complete evaluation). now, bloody semen. could it mean theres hematuria?

Unlikely: It's unlikely for the blood in your semen to be due to hematuria unless you also urinated blood just before ejaculation Usually blood in the semen comes from the epididymis/prostate/urethra and not the bladder although since urine and semen both pass through the urethra it is not impossible for a little blood from the bladder to find it's way in the semen. I would see your Dr for a urinalysis.