Hi richiesbaby,
Congrats on your 5k's and accomplishing such an awesome feat! You should be very proud! It sounds like you're working very hard with your exercise and healthy eating plan.
The fact that you haven't lost weight in the last few weeks certainly doesn't mean that you're not making progress, as the # number on the scale is only 1 barometer of your success! You very well may be losing inches (determined by using a cloth measuring tape) and fat mass (which you can use a specialized scale, like the Tanita that has a specialized feature that measures body composition) while maintaining/increasing lean muscle! Although muscle doesn't "weigh" more than fat, it is more dense, which means you may be losing those inches while staying at the same weight. The mere fact that you're including strength training into your weekly workout program is awesome, as it will allow you to maintain or slightly increase muscle mass while losing fat! In that aspect, I encourage you to keep strength training 2-3 times per week. The alli website provides very helpful, animated demos for an effective full-body workout!
As far as additional fitness advice, I would encourage you to include a variety of workouts into your exercise program. Instead of just running on your treadmill 6x per week, include a Taebo video or The Firm! Other great DVD's are P90X or Yoga Booty Ballet! All of these incorporate higher intensity segments, some strengthening/toning and really challenge your body! Any time that you can "confuse" your muscles, challenge them to perform at a different level or to do something different, that will help jump start your weight loss again!
Lastly, add 2-3 minutes of higher intensity burst during your runs. Do this by increasing the speed pretty significantly or the elevation. When you cannot go any longer, return to your "normal" speed and recover.
Best of luck and keep up the great work!
Your friend in fitness,
Kelli