I have had bright light flashes (peripheral), but no popping sounds going with it.
First thing I do is make an (urgent) appointment with an ophtalmologist. I'm scared of retinal detachment, because I have severe myopia (-10). He told me to Always pass by if I see strange things. Once I know my eyes are ok, I can be at ease again.
Just like Garden Peace, I have a few migraine auras per week. I get bright spots in my vision, but they are no flashes, they stay longer than a flash and then move around.