Getting headaches & don't know why.

I've cleansing and doing flushes since the beginning of September 2004. My body was a mess..premature aging, sensitivities to almost all foods, and too many symptoms to name. One symptom was migraines, which I got rid of along with many other symptoms. Now my skin is better, my digestive system is improved and I just feel happy and look great! Now the problem is suddenly over the past week I've been getting headaches that I can't get rid of. I haven't changed my diet or given my body any cause to become suddenly alarmed.

My hair also starts falling out worse when I get the headaches & sometimes my stomache starts to ache and I feel a nauseous--I even thought my period was coming early! = ). I'm baffled as to where this pain is suddenly coming from after I've improved so much. I wake up and I don't feel it. Then soon after it gets worse until I can barely stand it and just want to go right to bed after work. I also want to mention that I don't get sick easy or almost at all anymore. When I do occasionally get something nasty, I can fight it off in one day, but today I got a sore throat and my mouth swelled into blisters for about 6 hours after eating a tomato, which was the first time that ever happened. That all went away but the headache persists. Could this just be a bad flu that my body is fighting to the point that I can't tell it's the flu? Is there anything that could be causing this? Any advice would be greatly appreciated. Thank you.

Lovey