Hit my head many times on different things. i've had many concussions. what happens if i don't go to the hospital?

Depends on severity: Your question seems to be what to do if you have the next concussion. Right now, it seems you are doing ok. We know that there is a cumulative effect of concussions, particularly if they occur in a short time period. If you have a severe concussion or severe neurological problems with one, you should go to the hospital to have it checked out. There may be something more serious-like a blood clot.