Ambra, you won't feel better until it's checked in any event, so get it checked. I had the same issue with a small bump on my tongue, which sent in me into a panic, and off I went to the doc. Turns out I had just burnt my tongue on some hot soup. I felt like a twit, but my doctor told me to never feel stupid about following up.

Tina
Diag: Aug. 13/12
T3N0M0
50% + glossectomy and bilateral radical neck dissection, removal of nodes zones I - V
Surgery October 11/12
Chemo/rad on hold due to clear margins and nodes
Sept 21/13 clear CT with anomaly thought to be the artery, being watched closely.
Dec 16/13 - anomaly confirmed artery, all clear
nickname: "get 'r done"
Plans: kick cancer's butt