Yes, you are.
This was all made possible when the Avengers found a cocoon with Jean's body in the ocean and she was revived and revealed in the FF. That's when it was explained that Jean and Phoenix were actually 2 separate entities. I don't remember the issues exactly but the story happened around the mid 80's. It lead directly into the intro of X-FACTOR with all 5 members of the original X-MEN. Man, Marvel really turned Jean's history into a convoluted mess. Now we have a teen Jean from the past running around with the X-MEN today because Hank decided to bring her (and the other 4 original members) from the past to the present day. Like that move alone isn't enough, to further complicate things, we also have a Jean from the future running around now as well. What a mess.