Fixed retainer-wobbly sore tooth

[pompompadom]

Hello
I've had a fixed retainer put on my bottom teeth (I still have another 4 trays to go on the upper).
For the mist part I'm very happy with it. It goes accross the back six teeth, but the tooth it dies not go accross near the front is still sore because it wobbles still I reckon. I've had the reatainer in for about 4 weeks. Is this normal? Anyone else got a fixed bonded retainer?