with most moggies you wont even know until you see her slink across they floor with a little one in her mouth looking for a good place to hide her babies. they usually get up and down cant settle anywhere. when the birth is imminent she will start to paw at maybe a paper on the floor, or jump on your setee and start pawing at that, if she uses a box she will turn round and round until she is comfy .usually within an hour or so the first little one is born. try to encourage her to use a box with newspaper in it and put it in a very quiet and peacefull place. dim the lights if you can, and make sure that it is nice and warm. most dont need help unless something goes wrong which is very unusal or they are pedigrees and some owners like to be on hand in case.