What should I do? I can't wait for the pain to go.
I'm sorry you are hurt. Has it been bothering you a lot?
Yes I want to go out and buy something
Don't worry, the pain will leave you eventually and you'll be back to it. You'll be enjoying yourself before you know it.
I'll be able to scream and cry.
It certainly is understandable that you want to avoid pain. If  you are unable to manage the pain, it's okay to let out your frustration in an appropriate way.