Going by your description in your bird bio, it should be a Mustache Parakeet.
No, it shouldn't.
First off, there isn't pink around the back of its neck, it has black on its Nare, and its not a green bird (well it is, but its not just a solid green bird, like the one in the OPs avvie, and I'd imagine would mention a different colored breast)
Yet, and indian ringneck is a green bird with a black ring, and pink. But not as much as an alexadrine.
And this is why I think it's an Alex. Thick prominent black line, like the ops avvie, and has a thick, solid pink ring on the back of its neck
That, and an alexadrine is a large bird, and would be fairly easy for a newbie to mistake as a macaw, more so than a mustache or IRN parakeet. OP- does your bird have red on its wings? If yes, it's an alexadrine parakeet. If no, it's an Indian ringneck parakeet. It's possible it's a hybrid as well