i've been smoking my GH (over) fed weed for more than 1 month now. I say over fed because i experienced an over feeding problem during my last grow, i flushed during the grow and 1 week before harvest. I've been getting headaches, not very strong, but permanent, from the morning till the evening. My girl friend has got the same pain, and she thinks it's because of the weed, too much chemicals, she says. Do you think it's possible? Did you have similar problems already ?