still losing weight

i am 26 weeks pregnant and i have lost 23-26 pounds in this pregnancy. This past month it's actually stopped. neither gained nor lost. baby still growing. she is there and so far healthy. why am i losing weight?
i put on some weight during school, not having to work. i graduated in august 2 days before i found out i was expecting. i havent went back to work yet so that isnt it.

[luv_babies]

What does your doctor say about it? If your dr is OK with it, then just make sure you are eating nutritiously and enough.
I lost weight in the begining of both my pregnancies, but have always gained it in the second half. 26lbs total with DS and so far I am up to 17lbs with the twins (I am 25w 3d).