I think I got the spelling of that right. It's called 'amenorrhea'; missing a period or several in times of stress. And weight loss seems to be a side effect, not a cause. I haven't had a period since Thanksgiving,right before we moved; in the fuss and hassle of moving, the Christmas holidays, and my husband's wandering thoughts along with various other social and intimate pressures, i haven't had one in a few months. No, I'm not pregnant; I had myself 'spayed' after the birth of my second child. So the only other possibility is stress-induced amenorrhea, accompanied by weight loss (I've dropped one pant size since Thanksgiving). So I have to say, in my experience...no. Stress doesn't cause my libido to go up. I will say, though, that I've indulged in more self-inflicted bondage-and-pain sessions since Thanksgiving; the pain helps relieve my stress. Doesn't do anything to raise my sex drive, though I do find myself orgasming during the worst of the pain. But it doesn't bring any kind of sexual relief; the orgasm feels mostly perfunctory.