You'll have seen the "Accident Advice" thread by now.
First thing, given you're posting, get yourself checked out. Then get the bike checked.
Take, or get, pictures taken of any injuries to yourself or visible damage to to the bike.
Any bruising that appears, or increases in size should also be photographed. A visual record of the injuries. Bruising doesn't always appear in the hours after an injury. Cuts/grazes can be cleaned up.