First, heal quickly and completely! The loss of immediate memory is a signal to which you should pay attention. Additionally, if you lost consciousness you most definitely should have been checked out. I went down earlier this last summer, and thought I was OK until my wife asked me how I got home. I knew I rode home on the bike, but couldn't remember any of it. We were then off to the ER, and it turns out I did have a Grade 3 concussion, and the next day found that the retina of my right eye was starting to detach. What many people don't realize is that after a concussion the brain needs time to heal. And people often think they are "back to normal" because their other physical symptoms have abated. Don't be fooled by this. While it was good to take the 36 hours off, it would have been better to take a whole week. Should you have had a second accident before the first concussion was fully healed, the chance of doing more serious permanent damage goes up quite a bit. Disclaimer: I'm not a physician. I'm just relaying what I was told by a neurologist that specializes in sport head injuries.