Im on day 3, have had headaches, and other aches and pains, seeing lots of things in bms but have been passing flukes and worms for months months have done other parasite cleanses, but they were not overly successful, have been doing my best to make my body unwelcoming to parasites whilst waiting to do my first course of Humaworm and I think this has gone a long way towards eliminating critters during my 90 day wait.
I too am getting those tingling sensations around the head and face, have no idea what it is but it feels kinda cool.