It's hard to describe ... but it's kinda like a sudden longing for and need for something badly.
The first time I experienced it was in Primary 5 when I went away to camp with the Brownies.
I laid on the upper level of the bunk bed, trying to sleep.
And all the while, this feeling was making me oh-so-uncomfortable.
I didn't analyse it too much, and in view of the circumstances, I simply labelled it "homesickness" and then cried myself to sleep. :P
2 years ago, it came back once, I think ... when something very upsetting happened, but I can't remember exactly what.
Then, these few days, it's back again.
And I don't know why ... will prob need a while to figure this one out. :P
But I do know by now that it's probably NOT homesickness.
Haha.