Pretty much sums it up. Contrary to belief, your test levels are not bottoming out at exactly 14 days after, realistically it is more like 21+ days when exogenous test is low enough for the body to start producing it's own again. This is why a lot of people crash mid-way through PCT.
More importantly, why are you asking this question? To not know about PCT is silly, but to know about it and not run it is idiotic. (Not implying that, just some good advice

).