I know breakfast is important but on the days I have breakfast ( toast with peanut butter, oatmeal, an english muffin, etc) I start to feel very hungry about an hour or so later, sometimes I evern start to feel nausious. If I skip breakfast I am not nearly as hungry for lunch.

I have that problem too. The solution is to eat non-breakfast foods for breakfast. Eat what you would normally have for dinner. I usually eat leftovers. If possible, make your morning meal the largest. Unfortunately, it is difficult to do.