Its hard to say because if you're fighting multiple infections with different drugs, your liver could be pooped. I know that taking different meds (for toxoplasmosis and a parasite) at the same time will compete for the liver to process them.
It very well could be die off too. I took meds the other day (fenben) and have been not feeling well today.. die off could come days later when something actually starts to die. I forgot how these meds worked until i looked them up. Its not instant death... they get starved of energy and THEN die off.
I have it moving into my chest now too.. its torture between the coughing, the pain and the fluttering.