My cat is pregnant and about a week ago we felt them move and kick so we went to the vets to see how long gone she was an to check her over and he said that she has 3 weeks max left but all cats are different and are cat is only 7 months and so we didn't now she should get pregnant so we had to take her to see if she will be ok to deliver them an we may have still born so we have to stay with her and look at all the babys to see if and are alive . But if you have felt them kick and she is big then 4 weeks max try an remember when you first felt her kick is it was over a week ago I would say 3 week but if you havent felt her kick yet I would say about 7 weeks I may be and I not to sore on all this it is mines fist litter so I hope this will help abit but I donno