...at the worst possible time, will my teeth shift if I wait too long to get this reattached? I havent been to my orthodontist in over 3 years now....yikes!!

MiataGal I recommend you make an appointment to have another bonded retainer put on, or get a removeable one made.

Teeth continue to move throughout our life time, if not retained ... so it's important that you take good care of your ortho work!

Good luck!