We took my cat to the vet last Friday because she has been vomiting and acting erratically. We are waiting to hear back about her tests, though we found she lost a pound in the last year. Now she has gotten worse. She vomited again this morning and then did not eat at all today. She was hiding under the bed for most of the day. When she finally came out she could not jump on the bed (something she usually does with ease). A few years back, it was discovered in surgery that she had a hairball lodged in her intestine. Could this have happened again?