Am I a Young Adult? Or Just an Adult now?

I need to check out the qualifications for those "young adult" activities I don't attend. What if I'm no longer a Young Adult? What if I'm just an Adult? I don't feel like one of the old ones. Is being a parent an automatic disqualification from this church group? LOL. Since I didn't go to the young adult activities, will I still not attend the adult activities? Why did I not feel old before I starting wonder if I'm too old for the Young Adult group anymore?