tracpoint, or touchpad going back web without help:) ?

[m-blue]

Hi,
I hope, that I will explain correct, what is the problem;)
sometimes, when I am serching web - I am using tracpoint, but hand is close to touchpad, it happends, that website go back to few sites before, like after press back buton a few times in IE without my help:) It looks like when I have hand close to touchpad, but I am not sure, and non of functions of touchpad has function like go back...
It happends sometimes, I can't do it when I am trying go back, without press back button on Ie wiht mouse... sa maby touchpad is doing it? maby it looks strange:) but it make me nervous:)