I didn't read all the responses... but the last post you made referenced a serious change in your diet.

Do you eat enough carbs? I know that the "fad diet" is to eat low carb, but that simply is NOT going to work if you workout.

Let me ask you this, have you sat down and determined how many calories you should be taking in... and how many you are actually consuming? Maybe you are consuming too few calories.

Now, I am just talking from my own experience... but what I eat and WHEN I eat, has a huge affect on how much energy I have.

And, maybe your body is taking some time to adjust to the new diet? Eh... who knows????

Finally, is it the week before your period. I have read that women lose a ton of energy the week before their period.

Oh well... best of luck girly... and don't give up hope!