Hire a personal injury lawyer, go to a doctor. Play your cards right and you could have another one, better than the one you had before. Most importantly go see a doctor to be sure your spine is A-OK. Do not mess around with the spine.
I used to be against litigation on principle until I got hit by a cab driver whilst riding my bicycle home after work one evening about 6 months ago. SOB was going 40, crossed the center line to pass me on the left just as I was signaling to make a left turn. I was 100 ft. from my doorstep. Broke 2 bones in my wrist, my elbow now makes crunchy noises. Yeah, you bet I hired a lawyer. I went out and found the most vicious litigator I could find.

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'02 BMW 325i
'85 300D 450k
'93 190E 2.6 170k(killed by tree)
'08 Ducati Hypermotard 1100S 6k
'06 Ducati S2R800 14k(sold)