Let me say that you sound like a wonderful and very sensitive person to me. Just look at the pseudonym you have chosen for yourself. Hummingbuird! How romantic and beautiful!!!. Then you say you try to please people. That's because you have a kind heart which, unfortunately breaks easily. I think you have a lot more good things about you, which you haven't let yourself discover because you are now focusing on your fear for your life and your mum's. And you are right. I agree with Dante. You must go to the police again and ask for protection. Then, if you can afford it move away for a while until he forgets you exist. If this is not an option, then join support groups who can built up your confidence and teach you how to learn to take control of yourself and your feelings.
You have mentioned " God" twice in you letter. Do you believe in Him? He is the perfect protector you know, if only you would let Him speak to you. You would feel His Love and you will be conforted and all your fears and pain will be put in perspective. Just allow yourself to feel like a child in His arms and the rest will be history.
Happiness is not difficult to come by if only you would stop
having negative, self- depreciating thoughts and start
getting control of your life. Get your mum's support as well.
Good luck and God bless you
Have you thought that killing yourself will only add to his pleasure? Do you want to give this creep the satisfaction of hurting you once and for all?