Always get info if you took any kind of a significant impact to your body or your bike. Injuries sometimes take days to become apparent. People who have just been in an accident are not qualified to decide whether they've been injured or not - it's not uncommon to feel fine for hours or even days after an accident, then have significant pain come up.
My brother is a paramedic and he says it's not uncommon for people to be walking around saying they're fine, when he can see that they have broken bones. Adrenaline is a hell of a drug.
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Work: the 8 hours that separates bike rides.