Should I wear my retainer 24/7? Or should I talk to my orthodontist for other options? (Photo)

Hi, I'm very worried about my teeth. I had braves on for about 2 1/2 years. I wore two plastic clear retainers 24/7 for about 2 months. I started to get out of the habit because it was very difficult to wear it at school all the time. I started wearing it only at night. My bite moved slightly and my teeth starting moving a little bit. They are all straight but I could tell that they have moved. I noticed a very tiny gap in my two front teeth. what if it gets bigger? Help me!!