Go to the vet and get her x-rayed. You might see whats inside
If it is hairball then this is something treatable at home even. Do not get worried. Hairball problem is often seen in cats with long hair. If your cat is not having long hair then it is a serious matter other than that should be treated seriously.
A very easy way to treat hairball is honey. Add some honey in your cat's food that will act as a lubricant and let it vomit hair out. You can also do this by adding petroleum jelly in its food. That is an alternative solution depending on whatever is available at home at the moment.
A very easy way to treat hairball is honey. Add some honey in your cat's food that will act as a lubricant and let it vomit hair out. You can also do this by adding petroleum jelly in its food. That is an alternative solution depending on whatever is available at home at the moment.
The make hairball gels that are tasty that help, but if that doesn't help seek a vet.