It's probably die-off. You can have it for up to a month after the cleanse. Remember that not all dead parasites will pass out of your body, and they will be decomposing inside you...more toxins. Plus, if you have bad candida, which you do, the die-off with candida is worse, because it is all over your body, not just in your digestive tract.
It's rough, but I find that when my die-off gets really bad, a very hot bath or shower helps a lot.