Since I started this new journey yesterday, I have been having these headaches. They subside when I eat. Then they come right back. I was thinking it's withdrawal. In a way it's funny because my body think it's bout to be downloaded a whole bunch of food and my head will stop hurting. When it realizes the food is not it's normal supply my head starts hurting again, maybe 15-20 minutes. I was thinking it was withdrawal because when I fast that happens. I'm not going to let the pain stop me though.