I probably wish I didn't listen to the first physician I saw at the ER.

This is what I was told

"Concussions are very common, and heal very fast, try to work your way up and if you get headaches stop, exercise is fine but do not hit your head hard again"

I went home and played soccer for a few hours, felt fine. Hung out with friends, wrestled a bit, fine.

Next day I wake up with a horrible headache, and that was it.

I will probably never be able to completely trust a physician again.