How should I fix my toothache/gumache?

You really should go visit your dentist. You might have an abcess. For the time being though.. try a clove of garlic. Take a whole clove and crush it just a tiny bit & stick it where it hurts. Bite down on it.. it will burn at first.. keep it there as long as you can.. it'll help with the pain and may make it stay away for a few hours for you.