Hi MissInvisible, I am SO hoping that you're taking on board what the guys who have already answered have said over what your mum has said. Because going through life, trying to bottle up all your feelings.........pretending things aren't so bad...........not letting people see when you're hurting.............can do a lot more harm than good.
And you should be able to expect the people close to you, to care and offer you emotional support when you're hurting, to respect your feelings, to be there for you.
And **** does there have to be a point to expressing feelings anyway???!!! Feelings matter!!!
Anyway, it does sound like you're finding things hard right now........with things "getting too much"??? Or am I reading too much into that??? So I'll just say if you are having a hard time please try talking to someone about what's going on for you, whether it's trying to talk to your mum/your family again, a friend, someone from school/college/work (whatever point you're at)..................and of course you can talk to us too!!!
And you probably already know (??) but there is a forum on here for self injury where you can find real support if you're struggling with thoughts of hurting yourself.

Alison