all it means is that it needs to be praised or fed. To praise it, go to the first icon on the bottom on the screen (the left). Click on it, then it will say TIME OUT or PRAISE. Select the praise button. You should know how to feed it already, otherwise your baby woulod have died after a few minutes after it was born.
Well, since it stopped, that meant it was angry and needed praise. It's the bottom corner left thing on the screen. It will say praise and time out. Praise it.