I got the sore on my butt cheeks right now. That's not something to f*** around with. You do have systematic fungus infection with the telltale signs that you have.
As for the sore if the fungus gets into your blood stream your done for the fungus will be able to spread everywhere you go into toxic shock and die or the fungus clogs a artery or it spreads to a organ and destroys it. That happends in a matter of hours by the way.
Might have 48 hours to live if that happens. Colloidal sliver gel helped alot with the sore between my butt cheeks.