Melissa
If your Vicodin is in the original prescription bottle and has your name on it, you should not have any problem. I had Zero problems with my weeks worth of Percocet and other pills.
As for the doctor's note, all I did was email my doctor with a suggested letter and she just mailed it to me.
As Markus noted, the classic Star Wars ObiWan mind tricks don't seem to work on the TSA troopers, and in fact the one earnest TSA guy who tested my jevity for explosives didn't even get my" These are not the cans you are looking for" joke.
You're so young, I've put a link here to the video clip of the famous scene
ObiWan mind tricks on Troopers Charm