Am I the only One?

So, yesterday I ate 3 meals. Breakfast was just half a cup of coffee with 2 small waffles. Lunch was a hamburger and fries and Dinner was half of a mid size burrito. And I was sooooo full. I just can't hardly eat that much food. This morning I had a cup of cereal (cheerios no sugar) and I am just now having a yogurt but I'm really not hungry. Is this bad?? I'm almost 5 month's this Friday.