There's no guarantee that the number of days since you bought it can predict how rotten a piece of meat will get, it would depend on several factors, like how fresh the meat was when you first got it, the level of moisture it had, how much of that moisture concentrated on the surface, the amount and types of bacteria and fungi it was exposed to, how cold the area of the fridge where you kept it was, etc. A 4 day old piece of meat can be more rotten than a 6 day old one. Also, not all rotting is the same. Depending on the type of bacteria and fungi that proliferate, the properties of the meat will also change.
Also, just because you felt uneasy at a certain time, doesn't necessarily mean it was the meat that did it. And even if it was, it's not necessarily a bad thing. Sometimes your body is detoxing and it uses the nutrients in the food to help detox, and if it wasn't for that meat, maybe it would've used something else. Or maybe not, but then you'd only delay the process, rather than preventing it, by avoiding said meat.
I had a period where I would get a particular type of stomach/intestine pain that would last for hours. It didn't seem to matter where I got the eggs from, as the same thing happened with eggs from 3-4 different suppliers. I'd never had pain like that, it was a sort of generalized pain, rather than focused on a particular area of my stomach or bowels. It also wasn't dose-dependent. It made no difference whether I ate 3 eggs or 8 eggs at a time, in both cases the intensity and duration of the pain would be the same. So eventually I stopped eating eggs for months. Eventually the same thing started happening with raw milk, whereas it had never happened before with milk. So I stopped drinking milk. Eventually the same thing started happening with beef, whereas it had never happened before with beef.
Then I realized that my body was just doing what it needed to do and the particular food was only the means to an end, so when I stopped consuming eggs, my body had to learn to do the same thing it was doing, with something else besides the eggs. So it learned to do it with the milk. When I eliminated that, it learned to do it with something else.
AV has talked about this type of detoxifications in detail in his books, talks and newsletters. Most forum members here don't agree with him. But I have to admit that many of the things I've experienced can't be explained in any other way than with his theories.