What Should I Do If I Injected Coke Into My Arm, Hit A Nerve, And Now Can T Use My Thumb After An Hour?

I ve injected coke in my arm and have gone through a nerve which makes my hand numb but it only feels numb for a few minutes but I have just done that and I can t use my thumb at all and it s been an hour I can t pick anything up and worse I am an amputee I have 1leg I can t operate the wheelchair wat do I do