messing up and being bad are not connected.
scoring poorly and being bad are not congruent.
annoying your boyfriend is not making everyone hate you
and not being able to remember things also has nothing to do with being bad.

Now that you're feeling bad about yourself, I'm sorry you feel that way. If you are really doing bad things, then there's something to do to change this correct feeling. If you feel bad because you are having a hard time right now, then it's helpful to realize that who you are, what you are and are trying to be has nothing to do with things that happen along the way.

(((hugs))) feel better.