Binge eating disorder symptoms and conditions

HI i tried zoloft with a great amount of doubt, but it has actually been really good. For the first week or two, i had insomnia but that soon passed, and for a couple of days i felt mildly nauseous. My anxiety has definitely lifted, and my relationship has improved significantly , we are now getting married in 6 month!
I didn't gain weight due to the drug, and I am not overweight at all, but I do suffer from binge eating disorder. Don't know if zoloft helped with that aspect, but now I've just been put on Yaz (birth control), and noticed a slight loss of appetite. It this continues, this could be the answer to all my problems. So fingers crossed. With Yaz, also, insomnia and mild nausea for a couple of days, but I figure that could be my body getting used to the drugs.