About a week and half ago I woke up with severe nasuea. Before I threw up I had to urinate. To my horror my urine was as black as it could be. I went to the ER and they did X-ray test, a urine test, and a STD test. I had no pains around my kidneys or in my bladder. They determined I had no urinary infection, no STD, or kidney stones. When all was said in done they simply said I had (spelling) Hemeraturia, "Blood in the urine". Iknew that before I even had gone in. So anyways yesterday I go to the gym and do chest... 4 hrs later when i urinate same thing happened again. When it happened a week and half ago, the night before i had gone to the gym. Is this excersice related? Anyone have anything like this happen to them. Any help would be greatly appreciated. By the way I'm a 24 yr old male 5'10 225 pnds 12%bf.