Potential running red light/speeding

Posting this out of anxiety. Am on Red P's, drove home a bit late and everything was going pretty fine. The lights turned yellow and I was driving at 57 (speed limit 60) and I would've needed to brake pretty heavily to stop. I went past the yellow light but it turned red halfway through (still not sure how far across the intersection I was when it did). Problem is, I didn't get flashed here. I was across the intersection when I saw the flash in my rear view mirror. No cars crossed when I did and I was mentally like, oh shit, was that flash for me?

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When do speed cameras usually flash? Was that flash for me? I know I need to just wait it out but any information is heavily appreciated. This is probably going to be a very expensive lesson :,)