Have you had it checked out by the doctor? I'm sure its just nerves, but there is always a sense of reassurance in getting it looked at. I occassionally get weird quirks sometimes at various places, but normally I manage to just ignore it by telling myself its nothing and if it is anything serious it will declare itself over time, and it never has. I'm guessing that your simply focusing on it so much that your nerves are promoting that sensation from memory. Also if the symptoms haven't gotten any worse over the past month, then it shouldnt be anything serious. I hope that helps and you'll feel better.
matt
