The start of morning sickness?

I wouldn't say it's sickness, I just don't feel right on a morning.
More like that hungry, sickly feeling when you're tired and haven't
eaten properly. Is it morning sickness then? I can cope if it is and
it stays like this. But I'm dreading it getting worse over the next
two weeks at the jamboree - Sod's Law says it will though. I can't
think of much worse than feeling/being sick at camp :(