This is the essence of indicators, and in fact price charts. After you've seen what HAS happened, what MIGHT happen is down to a range of % probabilities. And this is where the trader's own experience comes to bear far more effectively than any off-chart indicator.
But you have to anticipate what will probably NOT happen, but MIGHT - this is where your stop-loss comes in. And also what COULD happen - you enter long after a minor swing low and before you know it, you've got a firm uptrend which is being supported by a flow of good news. This is where your trend-following plan comes in, with pyramiding etc. Be prepared.