Hello hello! Haha don’t worry! Hum actually, I always though that Nami could be a D, for example, when Nami was sick back after the Little Garden Arc, here’s what Vivi said when Nami preticted the cyclone:
According to Vivi, it’s impossible to predict the weather in Grand Line, but Nami can and I don’t think it’s a coincidence, it could have something to do with her real family (it’s only a suppositon). Also, when Bellemere found her and Nojiko back when she was a baby, she was smiling despite the terrible event that happened:
Bellemere said so herself: Nami doesn’t know the slightest thing about what’s going on. I know she was only a baby, but usually babies can feel when something wrong happened(I’ve seen that from babies I know so it’s only my opinion), they are not really stupid, and we all know that the D’s a carriers smile even in the worst circonstance, especially when they know they are about to die. Talking about that, in the movie Strong World, when Nami was trapped by Shiki and the dynamites were going to explode, she thought she was going to die, so she smiled and said “Don’t worry Nojiko, I won’t let anything happen to our hometown…” something like that (sorry I didn’t find the picture). The point is, Nami didn’t know that she was going to survive the explosion and the daft green, so she thought she was going to die and she smiled. Like all the D’s carriers.
I also want to point out this:
Okay, maybe I’m just fangirling, we can’t considerate this as a proof since it’s not in the canon story, but anyway, that’s why I thought Nami could be a D. But I don’t think Oda will show who is Nami’s real family since Bellemere is the only woman Nami would ever sees as her mother figure, and Genzo is like a father to her and Nojiko is her adoptive sister. And besides, the Straw Hats already form a big family! ^^
I hope it wasn’t too long and that I answered your question :)
(I hope my english wasn’t crappy too ^^’)