I don't usually get the headache until day 2, but I've had a "cold" for 3 days, and it's probably related to sinus pressure, etc. I got up at nine, and was back in bed from noon to 1. Now I've got to make the family's lunch, and then I think I'll hit the sack again. Tired, bad headache and a bit of achiness in my teeth, too. This happens sometimes with sinus pressure. I sure am glad that I'm fasting, as it will help clear out the mucuous FAST!