I think many people come to this way of eating with unrealistic expectations. I too have seasonal allergies. I'm allergic to pollen or whatever - not eating dairy or rice or corn or what not is not going to change the fact that I am still allergic to pollen/cats/hard work.
That said, if you are noticing more headaches after eating milk or cheese perhaps your body does not react well to dairy. Many bodies do not. Perhaps eliminating them to see if the headaches go away for a while might be a good plan.
If you're low on energy you might want to increase how often you eat carbs. Keep them healthy - rice, some potatoes, vegetables and the like - I'm not suggesting you start downing tablespoons of highly processed flour or some such - but do not be afraid to eat them. Just fit them into your daily calories/goals and see how it goes.
Sometimes it takes the body a while to adjust. Sometimes something works for 6 months and then your body tells you to change it up. Sadly, this body of ours is a complicated thing. Believe me, I wish it wasn't.
somehow I manage to leave my intelligence and decorum at the door wherever I go. I doubt your journal will be an exception to that - not on the rug
What the F&#* is a decorum? - Mr. Anthony