My old one broke, so a week later I finally get my new one. My teeth shifted of course, but the tightness and pain of the new one proves that they're moving back. Except, the retainer doesn't go completely over all my teeth. It makes my bite feel weird, and the my right main back tooth, the retainer doesn't go over it all the way. I went and got new impressions done and I'll have another new retainer this Friday. My question is the second retainer works fine, and it was moving my teeth back. Can I wear that until I get my newest retainer on Friday?