Feeling more human on clomid?

I have always had issues with being tired all the time. I am on my first month of clomid and all of the sudden I feel amazing! I have more energy than ever, my concentration is way up, my body feels stronger, weight and bloating is literally melting off of me (I have lost 6+ lbs in 4 days), I am craving healthy foods not crap. I do have hot flashes and insomnia (though I think that is from having SO much energy) but they aren't too bad. All in all I just feel so much better and more human!! I know that clomid blocks estrogen, I'm wondering if I could normally have too high estrogen?? Are these normal "side effects"? Or could this be pointing to an underlying issue with my hormones? Has this happened to anyone else?