Dear Shelly,
What happened to you is that your stomach shrunk. It is not that bad, after all, people have that gastric weight loss surgery in order to accomplish the same. But you need to eat something, because if you go on a very low calorie diet (intentionally or not) your metabolism shuts down, you loose a lot of muscle mass, and then when you start eating again your body stores fat.
It would be easier for you to have 5-6 mini meals than trying to eat three full meals. It doesn't have to be much, but make sure that if you eat a carb, you eat protein and fat with it.
I had a situation like this when my stomach shrunk due to emotional stress and I can relate the feeling.
Hope things get better for you. There's wonderful people here if you need to vent.
Best to you.