I have been using Invisalign for awhile (this is my ninth aligner of 15), but this one tooth does not seem to fit as well as the others. My orthodontist said to "keep an eye on it" (this was two weeks ago). I have had the current aligner on for two weeks (I'm recommended 2-3 weeks) and I am not sure if I should move on to the next one. My next appointment is not for another 6 weeks