It is very normal; the dead candida are flooding your body and organs, causing all sorta of havoc along the way. It should start to get better within a couple of days.
Check out able’s post:
One way to relieve your organs of doing the work is to do a sauna, hot tub, or steam room (or even hot bath); this will help relieve your body of all of the symptoms, your skin is the bodies largest organ.
If you are taking a probiotic right now, it could be causing problems. This is why you should save it for week 2 of the diet if possible.