Try doing a coffee enema. It helped me tremendously. I had the exact same symptoms. In addition to the candida diet I just started taking olive leaf extract when WHAM it hit me. I thought I was going to pass out from the dizziness, sweating and headache. I backed off from the olive leaf for a couple of days and feel better but am starting the olive leaf extract again today. I will still rotate the anti fungals so if I back off this time I'll use something else when I start again.
It's tough to do this when you have to work so my sympathies go out to you. Any way you can take some vac time?
I have no problems giving up the food, even coffee, and don't have cravings but the headaches just kill me.