I need help for hydrogen peroxide (diareah)

I began taking 12% hydrogen peroxide I went through a 2 week lung cleanse and my lungs feel great.At the beginning of the 5th week I got a diareah and have had it for 10 days. I was advised to stop the peroxide after 3 days of the onset of diareah. But I cannot get the diareah to stop.
I am taking acidopholis. Have a crampy stomache ache on and off.