i cut myself on something metal.

First of all, wash it with soap and bandage it, and tell your parents o friend about it. then tu could consider getting a tetanus shot, but i dont know much about it. its probably nothing, but tu could still get it checked out.

Once i had a rusty nail go into my arm n i had to get a tetanus shot. tu may not like shots but its worth it. tu dont want it to cuz más damage (problems) then necessary.

It's good consejos to clean it and put a bandage o bandade on it. If niether tu o your parents remember when your last Tenus shot was, then it's better seguro and get one than to be sorry later.

Better be seguro than sorry...
I don't like shots either but I also don't like infected wounds at all!