Are you keeping records of your meals/exercise/readings? I found that doing so showed me problem times, foods to avoid and improvements.
Depending upon how much weight you want to lose, the loss pattern can be weird. In my case, I lost 10 pounds in the first month, nothing for a few weeks, then another 30 in what seemed like days. I've been at a 40 pound loss for the last 3 months but 2 weeks ago, for no apparent reason (no change in diet/activity), I dropped another 3 pounds. Takes the body a while to get used to change I guess.
How low-carb is your low-carb diet? Do you follow the Nothing White plan we recommend around here?