You may want to buy a plug-in Feliway diffuser to put in your room. The pheromones it emits will help to calm her.
Be sure not to let any other cat near the kittens. There's a very sad thread here where a newborn kitten got its foot bitten by a male cat in the house. The kitten has since died.She gave birth to four little kittens today, in one of our closets, but because I have a male cat of my own, I've relocated her to my room in the back of the house where my boy doesn't go. My issue now is she doesn't like me leaving the room without her but I can't leave my door open because of my boy wanting to get near her kittens. She's already ripped a hole into my carpet!! I have to leave the house at some point. Is it best to place her in a crate?