Working Out And Not Losing Weight Is Frustrating

I've been working out at Billings Athletic Club since early January. In the first 6 weeks I lost 23 pounds which I find incredible. Unfortunately it seems like for the last 3 weeks I haven't lost a pound. I've actually moved to an even more strenuous workout regimen and while I'm sure I've added a little muscle it's probably not enough to account for the lack of weight loss.

In previous years when I've been on a workout kick it'll seem like I don't lose anything for 2 weeks and then out of nowhere I'll get on the scale and one day I'll just be 5 pounds lighter. Bizarre. In any event, it's not enough to discourage me because my blood pressure is way down from what it was and my workouts always give me more energy. I'll keep plugging away no matter what the scale says because I know eventually I'll keep losing weight.