I'm not a vet but have lots of cat experience.If your kitten has worms,(there's many different kinds of worms) She would prob Lose weight,also depending on what type of worm it was ,she would eat alot,or very little,vomiting...all sorts.Diarreha,or most common,u could see the worms in her poop.It could be worms,or blockagfe of some sort.That sucks!poor kitty.I guess deworming would be good in case,but whatever it is,best to do it A.S.A.P because it could lead to some serious damage whatever the case! Good Luck!!