Oh yeah, I do understand that it's uncommon, and thus not many people have heard of it, and I don't mind that so much. It's the fact that most people I've met aren't satisfied with the "I'm not sexually or romantically attracted to people" explanation, and seem to require proof that I am what I say I am. I haven't had it nearly as bad as some aces, and definitely not as bad as gay/bi/pan individuals, I'll admit that, but even my best friend told me that I "don't get out enough" when I came out to her (she quickly apologized when I gave her "the look" and has been supportive since, but still...). A couple of other friends asked if it could be a hormonal problem, and a few just continue to treat me as though I'm completely straight. It's just kind of discouraging, you know? And it's part of why I still haven't come out to my immediate family, because I KNOW that I'll get the "you're too young to know what you want/WE MUST GET YOU TO A DOCTOR" lecture.
I bet that must be a struggle to deal with. You know, I always thought that it is not so important to come out to one's family. Maybe, you could keep it to yourself a while longer until you feel more confident in coming out.
By the way, on a small note, I used to think that I was an aromantic ace as well until I got my first boyfriend. A little bit later, I figured out that I liked girls as well so yeah... I kinda went from asexual -> heterosexual -> bisexual... who knows, what happens next? :D