I have typically read about such weird stuff happening out of the blue after one starts using MMS.
After one starts using MMS, old long-dormant bad stuff (like parasites, candida, viruses, bacteria) which are hibernating somewhere in the body gets bothered/provoked by the MMS and then starts die-off reacting to such.
The typical solution to such is to then rest for a day (take nothing for a day), and then resume using the MMS.
I understand that you are not using any MMS right now, but that is what first came to my mind.