I had the same problem. First from caffeine withdrawal, then every day after surgery for 7 days, I had a migraine morning and night. Arghh! I do believe it's the toxins from carbs, the pain meds, dehydration/rehydration, etc. Your new body needs to adjust. Yesterday was the first headache-free day! Thank you, God. I now have the energy to keep on keepin' on! Best of luck.