I did finally go to my denist. I had my first root canal on tuesday. I was lucking that it was draing in to my sinus area and that probly why it was not hurting and swelling.
Thank you for your advice.
i would keep from popping it when it comes back and let an oral surgeon look at it. It could be something like a periodontal abscess which you cant always see on an xray, and it could just be in the soft tissue and not show as a radiolucent area on the xray. Whatever it is, I would get it checked out :)