What are basic signs my cat is gonna give birth?

I understand its hard to know when your kitty will get pregnant and it isn't too bad if your kitty has one litter just try to get her fixed as soon as you can! Its nice to have the experience though and see your kitty be a mommy once! she will be running around, my cat freaked and she's fixed now but sadly we thought she was a boy... She had one in a basket of clothes and one in the litter box and then we got her in a littler room. try to keep her food water and litter and her in one room and make her a little bed out of towels or blankets you don't mind getting ruined and keep her in that one room until she gives birth unless you want kittens everywhere trust me its very scary! and I'd keep her in that same room until the kittens are big enough to eat themselves.. Good luck hope she gives birth to healthy happy kittens that find good homes!