With his future up in the air, the 28 Year old admits there is a possibility he will be moved on during the January transfer window.
"I don't know where my future is going and so I am just playing every game like it's my last," said Tyson.
"I don't know what will happen in the next week or so - or in the summer.
"It's quite worrying. But if I just put the performances in, and I know I'm not cheating myself and I know I am working as hard as I can, then someone will notice it at some stage.
"I'm out there to impress who I can. It's more likely that it's not looking like Forest at the moment because I haven't heard anything."
Tyson, who joined Forest from Wycombe in January 2006, added: "Looking back over the last five years it's been fantastic and I just hope it carries on.
"I'll see where I am at the end of January or in the summer.
"I'm really enjoying it, I'm really enjoying my football at the moment. I'm going out there with a smile on my face - working hard and I want to be part of something really good this season.
"If I'm not here to finish it off then it's been fantastic but maybe I am here until the summer - I don't know.
"Hand on heart, I haven't got a clue [what will happen]. I don't know what's going on so I'm taking each game as it comes.
"The future is in the balance so I just need to put the performances in and be as honest as I can be."