Well, it's one thing to feel guilty for overindulging in a ton of junk food. It's completely another to feel guilty anytime you eat ANYTHING.
If you felt like the burgers were too unhealthy for you as a meal, then maybe it was necessary for you to get something else, but you need to make sure... that your body's getting the nourishment it needs to keep functioning, and keep dropping pounds.
You've lost 100 lbs, honey!!! And you haven't done that by not eating, I can tell ya that.
Maybe the real issue here is eating foods that you feel GOOD about eating. Was it possible, maybe, to make a chicken burger alongside the hamburgers for you to reduce the calorie and fat intake? What could you have done to have felt good about it?
I know that sometimes after I've eaten and I feel full and stuffed, I feel heavy and icky. That being said, half of my dinner plate is almost always COVERED in steamed vegetables, and mentally, I know that even if I feel full, if I feel heavy or bloated after my big meal... I know, that 50% of what's sitting in my stomach was nothing but good for me... fiber rich, and healthy as ****. Not to mention low-calorie.
My suggestion... maybe find a vegetable that you love, and try to incorporate a good amount of it into your meals-- fill up on it alongside the rest of your food. I personally loved STEAMED veggies... but maybe you love carrot sticks and dip... maybe you should load up your plate with carrot sticks, and allow yourself a bit of dip with them. Whatever you do just don't count potatoes as your veggie.
Maybe by getting in that healthy stuff and filling yourself up, you'll feel better in what you're eating?
You've done so amazing already, m'dear, and I know you're gonna keep plugging away. Don't deprive yourself of what your body needs! PROMISE ME!!!