Despite what went on at home, and at school, life will get better (especially when you finally obtain access to your own bank account and a car). You just need to:
Say no to everything, especially family pressure that dictates that you should be in a relationship from 16 onwards (Your confidence has been so battered that you don't even like people, so why would you want someone near you far too often?!) and do your A-Levels, a degree and a 'proper' job which will inevitably culminate in a nervous breakdown. Also, a good credit rating is an advisable thing to have in comparison to not having one at all.
Yes, you're female, but stand up, say no, and stop being a people-pleaser. Don't give in when you're told to be quiet. Also, question why it is fine for the men in the family to sit around while the women run around like they're on fire to keep them happy. You are important.
Be bold and be brave. You'll grow up, change the name that you hate, end up working in the sector that you wanted, and you'll move sufficiently far away for the family pressure not to get to you. Believe me, life is going to be much better!