My kitten got out during her very first heat(Ithink it was Septhember), now last night she was lying on my bed and her belly was moving all over, so I am sure she has kittens, how do I know when she is ready to give brth?
Thank you

When she has them. Its not like one of those things where you have to know, when she is ready, she will have them. Justation period is typically 63-66 days
P.S. If you love her, GET HER SPAYED!

When she is ready to deliver she will be very restless and uncomfortable. If possible try to be home with her. Try setting up a nice box for her with a comfy towel or blanket. She will most likely have them wherever she feels the safest. Anice quiet room with little traffic and a safe box will help her decide where to have them. When is a different question.