On Saturday I was at work and I was feeling very suicidal and the urge to cut or burn was driving me crazy. I started sticking this pin in my thumb just to get the pain so that I could act sane around my colleagues. I kept doing it, and I didn't think it would look that obvious, but I have these marks and scratches all over my thumb now. I was hoping they'd fade a lot before I came home today but if anything they're more obvious than before. How do I hide this from my mum? I can't dress it inconspicuously, I can't wear clothes over it, and the worst thing is I don't think I can explain it away easily either. It maybe looks like I've grazed it, but how would I graze the whole side of my thumb accidentally and not anywhere else on my hand? Any ideas ASAP would be much appreciated. I just can't handle another confrontation with my mum on top of everyone else.