I don't have any saved games for this game.
What I do know about this game, based on reading about it, is that the game usually doesn't punish you for using items at the wrong time. I would be surprised if the game did not allow you to find more coconuts somewhere else - can you think of anywhere where that might be possible?
Also, you could also try reloading the game from a previous save before you got rid of the coconut.