Are you on any gear right now? If so, just shurg it off things will look up. If your not, go see a Doc as soon as possible. Xanax and Paxil or something like that may help.
listen to everyone here. i will also say, if this is over a girl, screw that! dont ever let a woman make you feel this way. if she makes you keep feeling bad i will go and knock her ass out, so there!