I think my hamster is sick

Question
I don't know for sure but i think my hamster is sick. She is a golden-teddy bear hamster. Her symptoms are 1-not eating her favourite treats 2-sleepy all night and day 3-poop is smaller 4-fur not as clean 5-loosing weight. I went on the Internet and it might be a cold or a serious illness. PLZ HELP!! She is extremely smart and i don't want to loose her. She is about 1 year old and we got her when she was 3 months. She used to live with 7 other hamsters (her mom Spaghetti, her dad Meatball and her brothers). She is spoiled and is my first hamster. She used to be pretty chubby but she has lost weight. I got her at my sisters boy friends house and when my hamster was only a couple of days old my sister dropped her. I REALLY DON'T WANT TO LOOSE HER!!

Answer
Dear Karli, I sincerely apologize for the late response, my computer was totally messed up so I couldn't use All experts until today.
Your hamster probably is sick. Take her to the vet ASAP. If you don't have the money at this moment, some clinics allow you to pay of the bill over a certain amount of time.
The most common illness in hamsters is wet tail, a fatal disease, which is contagious. Sadly, only a few hamsters make it through this illness. Bear in mind it may not be wet tail. It could be something else. I would go to the vet.