Should I wear my broken retainer? (Photo)

My bottom retainer is broken in the back, but it is still connected in the front. It's the weekend (Saturday) so my orthodontist is closed, but I already have a scheduled appointment Monday afternoon. Should I wear the retainer in the meantime? I've had my braces off for about 6 months and have been wearing both of my clear retainers all the time. I'm afraid my teeth will move if I don't wear it, but I'm also afraid that the broken retainer might shift my teeth. Thanks in advance!