Thanks for the query to H.C.M. Forum.
One thing I want to make clear that she is not pregnant.
Still you have any doubt, please get in home pregnancy
test , so that both of you get rid of tension and stress
As this is important because , she already have stress.
As far as loss of weight , we require complete previous history of weight and illness , if any. Diabetes
is one of the most important cause of weight loss
, beside stress.
Consult a physician and get his opinion for complete health check up.