Yes. The thing might turn out fine, although started thinking what if we lose the chance or fail the thing or get hurt this time. Because it is possible that the thing doesn't work, although we still believe in ourselves and the thing. Either way (or both?) we might be thinking of the consequences in advance.
Mixture of thoughts and feelings. Similar kind of things were running inside your head in many occasions. Say, you might be waiting to know the result after the job application or the winner announcement after the competition or the answer after the proposal or maybe to know the news after some bad things. So we got a little restless. This thing continued until we know how the thing turns out eventually.
No matter what comes, take it. We still have other things to pursue or perhaps try it again. But wait. The thing is no news about it yet. Chill.