Hello, My Name Is Trevor Im From Ontario Canada And

Hello, my name is trevor im from Ontario Canada and I have recently started taking probiotic lozenges 2 hours after dinner and have noticed loser and darker explosive stools in the morning from what i assume is garbage that the good flora are kicking out. I read about black stools being a side effect of bleeding but i am experiencing no severe pains. A couple of month's ago i had gotten food poisoning and had the average symptoms, is it possible their was just old stool with blood in it that is being flushed out of me only now due to the introduction of new healthy probiotics in my gut ? thank you - Trevor