Any stomach upset could be blamed on NAC being in the hot seat this week. N-Acetly-Cysteine (NAC) plays a major role in digestion and the use of B12.
Nerves may be a bit on edge as myelin protein comes into play on Wednesday. Those joint pains may not really belong to you as an inflammation protein (C-Reactive Protein) comes into play on Monday. Could be some swelling of the finger and toe joints.
Some people rely on Bragg’s Natural Vinegar to take care of any of this stress. There are likely plenty of recipes online.