I second werebear's comments on stress AND on trying an elimination diet. I was stuck for two years seesawing until I did an elimination diet and found a half a dozen "safe" foods that were stalling me and causing other problems. Once I eliminated those things from my diet my losses started coming along steady again and after a 2 year plateau I dropped another forty pounds. Had I not done the hard work of finding the trigger, I wouldeither still be seesawing at the same weight or would have given up and ballooned back up. If you have been stalled for more than a few months, elimination may be the way to go.