Many think of it as 'sticking.' implantation in humans always occurs when the embryo is between 6-7 days old. A very popular concept on the internet now in 2012, 'implantation bleeding, ' is speculative and mostly not useful.
Also, urinary stones can form in the bladder lining due to an accumulation of debris and chemicals. Broken blood vessels can cause blood in the urine, often because of torn or enlarged veins on the inner surface of the prostate. Blood in the urine also can be caused by the sudden stretching of the bladder wall.
There are many possible causes of blood in urine for males. In addition to issues faced by both men and women, men may have issues related to the prostate gland. The most likely causes of blood in urine for males, according to the Mayo Clinic, include: -Urinary tract infections, which occur when bacteria enters through the urethra and multiplies in the bladder.