My orthodontist only left part of my wire on my bottom row of teeth 4 weeks before I get them off?

I went to my 2nd to last orthodontist appointment 3 weeks ago. When I was there they took my bands out on my last molars of my bottom teeth and my Orthodontist said that he was only leaving the wire on my first 6 bottom row of teeth.. well I am supposed to get my braces off in less than a week but I think my teeth with no wire on my left side have moved because my teeth do not fit "like a puzzle" when I bite. What is the point of no wire for 4 weeks on my back teeth? Will my retainer fix them?

No doctor answers yet