Why do I feel sharp pain in my chest during and after eating or drinking?

I ate at a buffet yesterday, and I had a lot to eat! During the night, I felt a sharp pain in my chest and today, everytime I eat or drink something I feel sharp pain in my chest. Was it because I ate too much? My mom said that it's because I eat to fast, and I do, but I don't know what's wrong? Please, tell me what it is, and how to treat it at home. Thanks. :)