I get the SAME thing. I couldn't think of anything to call it except "nesting-like" energy. The day before my period I get a burst of energy. As a matter of fact this was yesterday. My calendar said Monday I would start but Saturday I got so much energy and bathed all 3 of my dogs, lots of laundry, cleaned the entire house etc. Woke up at 4:45 this morning with severe cramping. Lo and behold I started. This happens every month. Its almost mania-like for me. This is the first time ive actually looked it up and im glad im not the only one. No complaints though. I love the feeling.
I have always experienced what you call 'Superwoman day.' Either a day before my period or the first day of, I'm running around the house cleaning like crazy or getting all my errands done. It's cool to know other women experience this as well! Personally, I love it and is a major tip-off to me that my period is just around the corner. In fact, I just finished cleaning my whole apartment ;-)!
I have the exact same thing. I have been so fatigued that i can only do about 1/4 of what i use to. then the day before my period its like i am recovered ,lots of energy and feel normal again. only to return to the extreme fatigue within a few days.
Have you had your THYROID checked? Hypothyroidism could account for the extreme tiredness.
It makes me wonder if your hormone levels (estrogen, progesterone, testosterone) have anything to do with your tiredness. These would be changing just before your period...