I don't think a month is a long time. I've had a batch going since Aug. 20 or so, and it's still fermenting a little (pushing a bubble out of the fermentation lock at least a couple times a day). Depending on the yeast you used and your original gravity, you may have a ways to go yet.
if you haven't racked it into a secondary container and there is a lot of sediment at the bottom of the container, you might think about doing so.
Primary: 19 Gallon (Cranberry) Cyser, Home Alone Cranberry Melomel
Secondary: Tenure Forecast Cider, Riotin' Cider, Virgin Cider No. 1
Bottled: pumpkin ale!, brown ale
Drinking: red ale