If you're worried to the point where it affects your health, it means you're in to heavy. If it's just concern, well, that's completely normal with any kind of investment.
That is the disadvantage of newbie style investing. If you are worrying to much, just sell it because too much worrying and stress will effect your health and you may need to be healthy first before making money.
That's the exact reason newbie investors should start out with small amounts to get used to the patterns and swings.