Suggest Treatment For Excessive Masturbating With Bleeding

Hi. I m a 17 year old girl. I m kinda on the fence of talking about this because it s so personal. I m a virgin, but anytime I do anything sexual, Masturbating or otherwise, I try to avoid penetration for a reason. I would like to know what is going on with my body. I ve masturbated plenty times. Yet every time I masturbate I bleed. It s not a lot, but it is light and lasts a few hours. I don t use my fingers because I don t want to chance my fingernails causing damage. I usually use a small object and make sure it s plenty lubricated so it doesn t cause pain. I thought maybe I scratched a wall or something but I thought if I waited a while to try that it d heal. I waited 60+ days and it has happened again. I d love to here from you and give me advice. Thanks.