Hi, I am 17 years old and put a toothbrush in my anus while masturbation. I put it as far until I could not put it anymore deeper (around 8-9cm) and kept pressure on it. Just after it I went to the toilett and only mucus with a few blooddrops came out. Do I have to worry now? I had and have no pain by the way.
Thanks for asking in Chat Doctor forum I understand your concern. Some may find extreme pleasure by stimulating prostate through anal canal like you and is called prostatic massage.  It has its own positive and negative sides. But, please use tooth brush only to brush your teeth as it may cause injury and bleeding inside the anal canal like in you.  You can get a counselling on prostatic massage from a psychiatrist for more information. And as for now, please visit a surgeon if bleeding and pain persists. All the best.