Newcastle have been dragged into thick of a basement battle after failing to win any of their last 10 matches, and they are now in serious danger of going down.
If Newcastle fail to beat West Ham United on the final day of the season and Hull City win against Manchester United, then the Magpies will be relegated, and Carver admits that would be unbearable.
"I can't believe it's come to this, but it has and we have got to deal with it," he said. "It doesn't even bear thinking about for me how unbearable it would be if this club dropped, down, I don't know how long it would take to get over it. There are no second chances now."
Newcastle could hardly have picked a better opponent for a must-win encounter, but they will still need to raise their game considerably in order to take advantage of West Ham's current struggles.
The Hammers have been in poor form since the turn of the year and have very little left to play for, with the London side destined to finish in mid-table.
It means that they will head to St. James' Park relaxed, and Newcastle clearly have the greater motivation to win the tie.
That said, if the Magpies continue to be disorganised as they have been in recent weeks, then the match is unlikely to have a happy ending and it could be that they have to rely on United taking points off Hull to ensure that they stay in the Premier League.