Is it normal to experience gum irritation with slight bleeding between teeth? (Photo)

I am on tray 14 and have never experienced this before. There is irritation in the space between 2 teeth and when I remove the tray, it bleeds slightly. I am not sure if this tray is defective or if this is normal. I can not get in touch with my orthodontist until after the holidays and I don't want to continue to wear it if it is causing damage.