Do you resharpen your broadheads after you hit a deer?
 

I'm not quite sure. I killed a deer with one and I don't know whether to throw the blades away or what.

What kind? If it's a muzzy or something similar I'd just replace. If it's a cut on contact like G-5 Montec or Bear Razor sharpen and definatly re-use. That's what I do anyway.
Good luck and maybe congrats?

I shoot GrimReaper expandables and I re-sharpen if they hit the dirt. If they pass through and just fall on the ground, no.

I don't use them more than once. I'll either use that one for practice or wait until I get a few and then put them on my table at a gun show.

If they are replaceable blade heads change the blades. If they are fixed blades, sharpen. Always change ur blades or sharpen them after shooting the head into something.