Hey Jodie,
From my experience as a personal fitness coach, I am 90% certain that the reason you've stalled is down to your exercise routine.
I would strongly recommend cutting down your workout times. 1 - 1.30 hours is far too long, and you are very likely not working at a high enough intensity, instead you are staying at an aerobic level, which is not effective for burning fat.
I have had many, many women go from hour+ long treadmill / bike / rower workouts and start using 20 - 30 minute body-weight circuits and the fat falls off them in weeks - BEFORE even making any changes to thier diet.
Here's what I would tell you if you were a paying client of mine and had come to me with this problem:
I would have you start each workout with a warm-up of 6 -10 full body exercises, done lightly to get your joints mobile (think, arm circles, light step ups, easy push ups, knee raises etc.
Then your main workout would be a basic full-body toning circuit of
1. Squat / Lunges
2. Push Ups
3. Hip / Glute Raises
4. Plank (core exercise)
Get through 10 - 15 reps of each exercise and go through the circuit 2 - 3 times.
Doing this will kickstart your fat-burning hormones and the drastic time cut will allow your body the time it needs to rest.
Its also true that exercising for longer than 45 minutes causes your body to release the hormone cortisol -which makes your body store fat (mainyl in your belly arrrgh!)
So, cut your workouts down but make them more effective, and you'll be back on track losing 1-3 pounds of pure fat a week, no doubt.
Hope this helps Jodie.
