Another beginner here...so it goes without saying that I am by no means very knowledgeable...yet.
However, I did have a carbonation issue with my first batch. So my question to you is did you stir after adding the priming sugar? I did not on my first batch and is what I'm chalking up as my issue with carbonation. With mine though, I had some that were very carbonated, and some with about zero. I even tried rousing the yeast and allowed to sit longer with no results. I even opened a few this week (were bottled July 1st) and still nothing. Just throwing that out there.
You are definitely still early though being that is has only been 2 weeks.