i woke up this morning with 4 little bumps on the inside of my mouth. they are are in a line and increase in size the further they go back. they aren't sore and don't hurt or anything, honestly i can't even notice them. i'm just wondering what this could be? they don't really have the white cover like canker sores do, but that could be because they’re brand new? maybe my retainer irritated my mouth lastnight because it was rubbing or because it could be dirty or something? ...could it be a disease or infection?!!! PLEASE LET ME KNOW. sorry my teeth look weird in the pics, my retainer is in.