Pinky Weight Gain My Hamster's Lost Weight, Im Worried!?!?

My hamster's lost weight, im worried!?!? - pinky weight gain

My Hamster's Pinky children between 6 months and 15 days, a week before we went to my aunts house, and I brought with me. I knew I had to adapt to their environment, it has about 5 days, but started in these 5 days to lose weight. I know that the Syrians now weigh 4 oz 6-8-09 to 6-16-09 still seems thin.

Can have a hamster to bring another round, even if it is your natural home?
What can I do to help?
Is there anything to do with your weight?
I have a conference there and work all night, I remove it, or it is good to remember that with little movement?

Any advice would be a good thing!

Thank you!