The only way that I keep my mind off of this stuff is playing MvM but I can't play due to my grades not doing so hot. Also there was no blood from the pen but some from hitting myself. I mostly hit myself in the face.
No, the fact that there is no blood or anything is besides the point, you are still harming yourself. That is not going to help.
Given the thoughts youre having, and if its affecting your schoolwork to be harming your grades, talk to a teacher, a principal, a counsellor, any authoritative figure, they are not going to be your enemies. People will make accomodations so that you can focus on overcoming this and then get your life back on track