i want to bleach my hair it currently black but idk what will happen cause i had red and blue under it. So if i bleached it would it come out all weird cuz of my already messed with hair? what should i do?

There's an article about this somewhere but I'm not sure where it disappeared to...
But as someone who recently dyed black over purple and then bleached their hair, I can tell you it is not an easy process.
And it's very unlikely the red and blue will show up because when I bleached my hair I saw no traces of purple at all.
So what you have to do is use a colour stripper to get rid of the black, and then bleach again in order to lighten your hair.
But sometimes it may take several bleachings to achieve this.
What colour are you going for?
That will definitely determine how much damage you're going to have to put your hair through.

i thinking teal with pink but im shure its going to trash my hair

There's this guide, if you haven't looked at it yet:

http://haircrazy.info/dyeingtechniques/getting-black-hair-dye-out/

Good luck getting the black dye out, kamikazi!

From personal experience, I would definitely go with what hopeless deviant said. Try not to be in a rush either, the longer you can wait between stripping the color and bleaching it, the better your hair will absorb and hold the next dye you use!