My midnight snack...oops!

I woke up last night about 11:45 pm because I was soooo hungry. I went to the kitchen to drink some water to fill my stomach. I didn't want to eat then go back to bed. By the way, why is it when you eat then go to sleep, you wake starving? That is so weird. So anyway, I was in the kitchen drinking water but it didn't help. I had eaten dinner about 630. I had whole wheat spaghetti and a salad with sugar free tea. I know healthy, right? I can thank Joe for that. So thank you honey. After I guzzled down my water, I started looking for something to eat. I had to, my guts felt like they were eating each other. So I looked in the pantry and the fridge and found nothing. Well at least nothing that I didn't have to cook and I was not about to do that. So I ended up eating 2 pieces of toast with some more tea. It was actually kinda healthy. Whole wheat bread with smart balance butter. We don't have any kind of snacks what so ever. Joe has been on this diet (I guess you call it that). Which I think is great for him. I mean I never really been into the diet thing.I have on occasion but it isn't something that I prefer. But I do have to admit that I feel so much better eating right. When I do eat something unhealthy, I fell so....blah. OK back to my story. So after I ate, I went to bed content. My stomach was smiling. :) I fell asleep pretty quick but when I woke up this morning, I was starving again! Why does that happen?