How do you know when your hamster is ill?

they are not their normal self, less active etc, moody, sleepy more than normal,

You will see a huge difference in the hampsters behavior. They might eat or drink less. They might even walk slower. They could be using the bathroom less.

Make sure your feeding the hamster right and giving it water everyday if your really unsure what to do then take your hamster to someone that knows them really well eg: vets and other places dont...

panda hamsters are black and white and normal hamsters are brown and white.

If its male, it isn't pregnant! If your female hamster has never been in contact with a male hamster, it is impossible for it to become pregnant.