Cat has been keeping on for food, yesterday it was violently sick, gave it a tiny amount of dry food at bed time and it was sick again in the night, when i was cleaning up i saw what may have been a worm (was quite long and white). The cat is wormed using the tablets from the vet (have just wormed it again but not sure if he will keep it down), now i am panicking that we might have worms (me and the dc's), i have just wormed the dog (who seems to be ok), should i worm all of us?