Ok, first ... breathe in ... ok now breathe out.
If your girl is not straining, pushing or otherwise in obvious signs of labor and she is not in any way shape or form demonstrating distress of any kind whatsoever, then the chances are good that she is fine. However, your vet is the ~only~ person who can accurately assess her circumstances. Are you willing to take the risk of not taking her in? What if she really is in trouble? Are you 100% absolutely certain you felt a kitten kick you when you picked her up? If you are 100% absolutely certain, then she probably does need your vet's assistance in delivering. If you are not 100% absolutely certain that is what you felt, then you could choose to give it some time and see how she progresses through the night. But, if she changes her behavior and becomes lethargic or stops caring for her kittens, if her vocalizations increase, she is showing obvious signs of real distress, or is showing any kind of vaginal discharge other than a small drop or two of blood ... you stop everything you are doing and take her in to be see by a vet right then. You don't waste precious time to come here and post a message about it, you get her in. You can update us all after you've gotten back home - OK?