I don't believe it is possible for your ozone therapy to be bad for you because you are a biological creature who thrives from the oxygen that you receive.
But it is bad for the parasites who do not want to give up their happy home.
It appears to me that you may be trying to take too much too soon. Ozone therapy like H2O2 (Hydrogen-Peroxid) therapy must be gradually applied in order to give the body a chance to adjust and fully use the oxygen you are giving it.
I suggest that you decrease both your frequency and your dose and gradually work your way up.