i've been injured too. Many times. Too many times actually and here is something i have learnt:
do not abandon everything and move over to machine training.
in short: Disregard t-block's advice because it will be counter productive to you in the long run. Using machines will basically make you unlearn your free weight movement so when you get back it will be an unneeded uphill climb.
I've dealt with deadlift injuries. With your form it was inevitable and i had warned you of this earlier but you were adamantly against listening to me.
When you want to listen and if you want to heal then i can help you. So get back to me when you are ready to heal. Sitting on your ass unmotivated or doing machine work is not going to heal you. It will still make the injury something which can come back in the future. You should use this opportunity to get your technique down right and work at it. Not only technique work but now is when you should be focusing on injury prevention.
Let me know when you want my help. Till then you can keep feeling sorry for yourself or frustrated. When you are ready to get off your ass and actually learn the movement and have it ingrained in your motor pathways, shoot me a pm and i'll help you out - only because you are young so i don't expect you to be wise. But be aware that both saibot and me told you that this could happen. Like any typical 15 ear old you didn't listen to us. I hate to say i told you so but i guess everybody learns things. I learn things from listening to other people's experiences and save myself the trouble of dealing with injuries first hand. You on the other hand....