I just got my braces off today and received a retainer. When I tried it on in the car before leaving the parking lot, I've noticed that the upper left back was loose. So I went back in to the office and they said that they will adjust it. After they made the adjustment with some hand tools, I put it back in to my mouth and it fitted. Now its my first time wearing it at night and the upper left back is loose again. This problem will prevent 3 of my upper left back teeth from being. My orthodontist office is closed tomorrow, they are only open on mon-thurs. Is there a possibility my teeth can move with it being loose 4 nights in a row. I'm pretty sure it could move, but would it move too much that another adjusted retainer won't fix the problem? I don't want to wear braces again, I just got them off today.