Weight

Ladies!! Quick question. I still havent gained any weight. I understand that at my height im "obese" and when people tell me something I already know. But I am still not gaining weight. Im at the same weight for the last 3 months and Im 19 weeks... I started at 202 and now im down to 190... And im stuck at 190, unless I eat im stuck. And even if I do eat, im back at 190 by the end of the day.