Will we have a second chance to go to heaven? There are at least three different reasons a question like this gets asked. One is very Catholic, a second very Protestant, and the third ... well ... universal.
The Catholic might best have his question paraphrased as something like “Is there a purgatory, and do we get to go to heaven at the end of it?” The Protestant is really asking “Is this ‘rapture’ thing I’ve heard about really in the Bible, and if I get left behind, do I get another shot?” The universalist is asking some version of “Surely hell cannot last forever, can it?”