Oh I'm sorry you're going through this, it's never nice even at the best of times. Just give yourself time, ok. I know it's horrible to go through, but it DOES pass, it will get easier, you really just need time, to ride it out.
Try to distract yourself, sitting around thinking about it will make you feel a lot worse, do you have any friends you can call? You probably need them, or family, or whoever, right now. It's good to find things to do to keep you from thinking too much.
x