How are you measuring your bodyfat?
Women's bodyfat is not in the same ranges as men's, and I do often wonder if men use the ranges they know for men and apply them to women with a visual estimate.
If your bodyfat is consistently that low (and 7-14% is seriously low for a woman), then your symptoms may be more related to your own body's physiology trying to survive at this level.
There is a reason that BBers have on and off season.
If you are maintaining this low a bodyfat, then your diet may also be related.
Supplementing with omega-3 fatty acids has a profound effect on quite a few psychological states, I have a few papers related to the biochemistry of mood and emotion.
^^ I agree! Specially with fish oil. It's certainly healthier..