Is the maintenance device being well maintained?

It's been a while since I got braces, and after finishing the orthodontic treatment, I thought about not using the retainer because I found it uncomfortable, but I was told that it could cause my teeth to shift again, so the retainer is essential. The retainer itself wasn't that uncomfortable, but once I caught it on food while eating and it broke. It hurt, and since I couldn't go to the dentist immediately, I just left it as it was. Recently, I've been feeling that my teeth aren't aligned properly, and I'm worried. I'm wondering if I should go back to the dentist to get a new retainer or if others are doing something different.