Get checked...your friendly EMT here is saying DO IT!!!

I'm glad Sebastian is ok. As for Allstate, excuse me but you were rearended! You don't pay a dime! It's on that woman's insurance 100%, including your medical expenses.

I've been rear ended in MA before, and because we don't have no-fault insurance in RI it can be a bit of a pain to get it paid, but her insurance is supposed to pay. I'd contact her insurance directly.