Don't trust the wii board for weigh in's, I've always found mine really unreliable! A good pair of scales kept in the same place is the best way to weigh yourself I think, also make sure you weigh yourself at the same time of day each time, I've been told that your weight can fluctuate by as much as 2 to 4lbs every day, so to get the most accurate results it needs to be the same time each day
You're doing really well hun and with what you've been eating along with all your exercise I'm sure you'll be loosing weight, there's no way you can't be!!
Keep your chin up and keep up the good work!! xXx