hey dar,

That is awesome that you got back on your bike after the fall!

If your helmet/head hit the ground, you should get a new helmet. If you crash and hit your helmet, throw it in the trash because it is done. $75 dollars for a helmet is cheaper than a lifetime of brain damage.

For some reason my Giro helmet doesn't sit on my head the right way. I have two other bell helmets that fit me like a glove. So look at many different brands and have them measure your head.

I'm not sure about your pedals though. It might be a case of that you still need more time to develop that muscle memory to unclip in a split second. Have someone else who is experienced clip into your bike and get their opinion.