People misuse words all the time. Even doctors!

So don't freak yet.

Un---This prefix to some means negative

So someone may have dictated that response using the wrong term.

Look how often jealous and envious are misused today!
Envy means we would like what someone else enjoys or has.(typically possessions). One may envy a fancy car, or a lifestyle, or beauty.

Jealousy is more directed to possession of a person and the feelings they can share. While the terms are similar they are also different. When one is jealous, one does not want their significant emotional partner to give his/her attention elsewhere. This word is often used to describe envy, and as the years pass, this has become almost standard usage. So one has be very careful of language.

The fact that other tests are suggested, means the diagnosis is not firm.
Typically a spinal tap is also done...so prepare for that one.

I'll never forget the doctor who told my grandmother that she had spots on her lung, and probably had cancer. She went home and was emotionally devastated and upset for days. I made her call back, and he apologized and said the films were not dry yet.... she suffered that "diagnosis" acutely.
So please don't get freaked yet!