What measures should I undertake if I find myself in the unfortunate predicament of having lost my retainer? In this dilemma, what are the immediate steps one ought to consider to safeguard my orthodontic progress? Should I reach out to my orthodontist promptly, or are there temporary solutions I could employ until I secure a replacement? Furthermore, how might the absence of my retainer affect the alignment of my teeth in both the short and long term? Is there a specific protocol for notifying my orthodontic provider about the loss that could facilitate a swift resolution? As I grapple with this unexpected challenge, what intricacies should I keep in mind regarding potential costs or the need for new impressions? Additionally, could multiple instances of losing a retainer lead to complications in my treatment plan? What strategies might help prevent future losses of my retainer, ensuring I maintain my hard-earned results effectively?