Ok so one morning I was brushing my teeth and then I look in the mirror and I watched my eyes change color they went form a light brown to a black and red color and it was freaky and I don't know how to explain it I look everywhere for an answer

Far too little information for people online, sorry. Age, past history, family history, how long it lasted, were both eyes the same, what they look like now, are the whites of the eyes still white, on and on... and even after all that, you still need to see a doctor for a physical exam.