I've heard that red light cameras go off 1 second after the light turns red. How could they book you when you could have, quite legitimately, gone over at amber and still be passing through at the exact instant they turn red? Based on your description I'd be very surprised if you're done.
We all make mistakes, particularly when we're tired or stressed. I went over a zebra crossing (not a red light, still very bad though) when someone (very thin, hiding behind the beacon pole) was waiting to cross.
I also went over a zebra crossing, at very low speed, when someone was actually crossing. My view was obscured by traffic until I was actually on it. Waved an apology to the old lady. The rozzers saw, but didn't seem fussed.
If we all got caught when we broke the letter of the law there would be literally no drivers left on the road. Don't beat yourself up about it.