Make sure you get the Protein in first..........and oatmeal is NOT a fattening food! But do make sure you are eating the whole grain version of oatmeal - Irish Oatmeal....burns more slowly in glycemic level for the sugars and carbs....
Have a LITTLE...it's about the ability to eat the things you like NOT about denying yourself things you enjoy....ADD some berries (not a banana..makes your sugar rise faster....) and nuts...walnuts or almonds...great protein and the fruit is important...
Egg are great but try working in some finely chopped, cooked veggies - like onions, peppers, spinach or broccoli......and don't hesitate to add a bit of chedder cheese or grated parmesan or queso fresco....
One egg....even one year out...that's what I enjoy....Blend the egg in a blender when you're at home with some Water or 1% milk and you'll have a lighter egg...
BUT when you're traveling....
ask them to give you soft eggs....
And try some frittata if it's on the menu...or I love having heuvos rancheros...I just ask for the sausage or chorizo in turkey - if they have it
OR on the side, as well as the sour cream, gaucamole and Beans on the side so I can add a little to my eggs and ask them to go light on the melted cheese...
Have a good time out...everyone is different ...So you'll have some trials...BUT remember to listen to your tummy...when you feel full, satiated...start to get signals...LISTEN TO YOUR BODY!