Hi @Vanessamdean. Thank you for sharing your photos--it would be unlikely for tear trough filler placed five months prior to migrate suddenly. You may have experienced some type of inflammation from a viral infection or allergic reaction. I recommend that you follow up with your injector.
Best...
Filler injections to the tear troughs is not FDA approved, but is a common area for filler. Patients are typically happy with the results and the treatment allows many to enjoy improvement without having to go through surgery. I recommend using an experienced injector familiar with facial...