Need some advise, my female cat mated with my tom cat and her season finished rapidly. her tummy has swelled and her teets have gone pinker with white tips and i can feel movement, as in wiggles and limbs, not ribs before you say it!! yet today she has started sinking her belly to the floor, moving her tail to the side and 'humming' to my dog, which she usually does when she is in season. she is also 'flirting' rolling around on the floor like a maniac! but what has happened to her pregnancy? and why does it seem like she is back in season?
Without any idea of the time scale of these incidents it is difficult to offer any advice. If she mated successfully you would not see signs of pregnancy immediately. How long was it after the mating that you saw these? My advice would be get both animals spayed/neutered. There are already too many unwanted kittens around.