my advice for you is if you feel ANY pain at all see someone about it. about a month after my accident i couldn't hardly climb out of bed (i was 19 then) so i went to see someone and then when they sent the bill to the other guy's insurance company, who was at fault, they refused to pay till i got a lawyer. your accident looks pretty bad so i would suggest seeing someone anyway but if you feel any pain at all, go see someone. it has been two years since my accident and i still wake up and my back will hurt till i get up and walk around a bit and at 21 i can only assume it will get worst with age.
here are a few pics of my car after my accident
what happened: i was sideswiped by a semi while in the middle lane of three lanes (on I-75 North in cincinnati), hit a landscaping truck's trailer with the back of my car trying to gain control, then did a 180 and hit the same semi that sideswiped me with the front left of my car (funny part is it isn't until then that the airbags deployed).