TRIGGER WARNING

I am a cutter I am just going to say that now. I cut my arms and thighs. I've always used scissors or thumbtacks or knives and those don't hurt me but I used a blade today and my arms really hurt and I don't like pain they sting. they hurt. they itch. but i know if I itch them it will only make it worse. advice? also, I have a doctor's appointment and my doctor thinks I'm 10 months clean and they are checking my whole body...