Food Question

[markolas]

This is a question for our resident nutrition experts (i.e., amber).

I decided that I'm going to start eating more fruits and vegetables and less red meat in an endeavor to help me lose weight and feel healthier. So, the first day of this (last week), I ate a yogurt, blueberry, whole grain cereal concoction for breakfast, then I made a tomato sandwich for lunch, which I ate at about 11am.

By 2pm, I was about ready to pass out. I made it to 5:30, when I hightailed it to Wendy's and had one of their double-meat cheeseburger value meals.

So, the next day I decided to pack a couple of things. I made an eggplant burger, and then a bagel sandwich with various veggies on it (romaine lettuce, tomato, bell pepper, etc.) but no meat. I ate the eggplant burger at about 11am (my regular lunch time) and the veggie sandwich at about 2pm. But by 5pm, I was starving again and ended up having McDonald's as soon as I got off work.

What's up with this? Do I just need to get used to being hungry all the time, or am I not doing something right?