the esophagus (sp?) can be torn, as can the lining of your stomach, which can also become ulcerated (i think) from the excess stomach acid that could be produced. I dont know about the tongu, but it probably isnt good for it. Chest pains are clearly not a good sign, this is beyond the point where you can help yourself, you need to talk to someone.
you seem under the impression that this will be an easy thing to overcome and that you can do it alone; newsflash: neither of those things are true.
its great that you've taken a step and told people on here, that in itself takes guts, but you also need to take another step and tell someone close to you, or preferably a doctor, so that people can begin to help you overcome the problem and get back to health.