Die-off: is this a typical reaction?

I had been taking anti-fungals and probiotics for about a week and a half without noticing any real difference. Then, a couple of days ago, it was like WHAM! I started getting MAJOR spaciness (can't think straight at all), ears ringing, Sugar cravings, dizziness, etc. Is this typical die-off? If so, why didn't it begin right when I started the anti-candida regimen? Does it normally take a week or two for the body to start exhibiting signs of candida dying?

Thanks!