A bad die off reaction steming more than likely from your glands in the neck (lymph). You should really start using zappers during the day. The reason for this is because you will drink, exercise through the day. If toxins etc are released and you go to sleep not drinking etc you will get more symptoms. How long did you zap for? You should have zapped for the 7,20,7,20,7 minutes like hulda protocol and NOTHING less otherwise this would have made it worse for you. Please follow instructions carefully else you can get very sick. I suggest if you dont have Ozone and C.S to just drink a massive amount of water all the time your using the zapper (as in throughout the day).