Bladder endometriosis is for females only.
Hi
Welcome to the MedHelp forum!
Since you can actually see the blood in urine, you should rule out clotting disorders including low platelet count. Gross hematuria visible to naked eye is also seen in kidney and bladder stones, cancer of kidney, sickle cell anemia, bladder endometriosis, low platelet count, bladder injury and bladder infections. Apart from urine examination, you would need some other blood tests and imaging tests and maybe cystoscopy.
Do discuss this with your doctor (urologist) and get yourself examined. Take care!