People use the term narcissist liberally, often as a shorthand way of expressing disapproval of someone else.

Narcissistic Personality Disorder, though, has specific criteria, which are laid out in the DSM-5 manual. You could take a look at them.

You mentioned that you used to lack empathy and you have been working on it and getting better at it. That's admirable! And does not argue that you are a narcissist.