As a female, I believe what you did may be questionable, but I personally wouldn't consider it to be something to cause yourself to live a life in hell, because that's what you're causing yourself without her permission or desire. She's probably more pissed that you left with no good bye. And yes, a woman knows when sex had happened mainly because even unconscious she would've become aroused and she would've been more wet than usual. There's a one percent chance that she didn't tho. She was probably more worried if you used a condom or not so I'm sure she went and got checked for stds and did a few pregnancy tests. I personally don't see the cancer being caused by your lapse in judgment. I'm lifting you up in prayer ❤ We can our own worst enemy.