I have to agree on the upping your protein
I find that it helps me a lot. Try to get it up over 25% at first and ekeing it towards thirty, if you can. Also, get a HRM - I too use the machines at the gym for "calorie burn" estimates, but I think they're probably off (I enter my age and weight, but it doesn't ask for height, for example) and I will be getting a HRM at my next paycheck
Also, when are you weighing yourself? I often find that if I weigh myself the day after a lot of weight lifting, I'm mysteriously up a pound from fluid retention. Try to figure out a day when you might be retaining less fluid, perhaps?
I'm also giving a thumbs up for logging sleep - I was frustrated before because I thought my "burn" was around 1200-1500 daily (and thus I should have been losing 2-3 lbs. per week) before I started logging sleep - now it's averaging more like 750, and that's way more accurate for the amount of weight I'm actually losing (averaging a pound and a half per week).
Female, 31 years old, 5'4 1/2" tall
Starting weight 1/4/11 = 215.2 lbs.
Weight 10/11/14 = 175.2 (net: -40.0)
Last mini-goal: 180 lbs. REACHED! Reward - new sports bra
Current min-goal: 175 lbs.
Next large goal: 165 lbs. by 12/25/2014
Lowest weight: 156.7 lbs.
150.2 lbs. <--- Official "Healthy BMI" weight
Estimated final goal: 130-140 lbs.
"You don't have to change your life today. You only need to change your day today."