hello, im 14, im about 5´3, and i weight 110lbs, i never had this problem, i have a small lump in my anus, i think is what is called perianal haematoma, but im not sure, it hurts, but i dont know if it is something else, like hemorrhoid, i had this for about 3 days already, i haven´t told my mom yet, if it´s perianal haematoma, i know it will heal by it´s own, please tell me what it is and what should i do.