I don't know what to do and I don't wanna tell my mother because I am only 15. What should I do and what could it mean? Am I going to die. Please help me I need answers.

There could be lots of explanations and not only am I not a doctor, but you haven't told me enough for me to know even if I was a gynecologist. I will say this, if you were bleeding red blood, as opposed to the type of darker blood that comes when you have your period, and there was more than a few drops, then you should go see a gynecologist immediately. You don't have to tell your mother exactly why you have to go. Say you had some bleeding and you're nervous and want to see a doctor. Just make sure that she is not in the room when you talk to the doctor because you'll have to tell the doctor the truth. I know you're scared, but if something is wrong, the sooner you see a doctor the better.