Hello my cousin is a 15 year old girl and she is peeing blood and she said it burns. She said she is on her period, but that it isn t her period because she had a tampon in and she went to take it out when she saw the blood thinking it was full but it had barely anything on it. So it is confirmed it is not her period and that she is really peeing blood and that it is burning. She just recently got a birth control transplant into her arm. I don t know if that had anything to do with it. But I m just trying to figure out what might be wrong with her. I hope someone could please help me and my cousin.