It could or it could just be injured or have a disease
if a hamster bleeds, it means that it might have gotten cut by something in it's cage. (nothing should be sharp in it's cage) If it bleeds that means it is either pregnant or starting to die.
It got it's tail caught under a rocking chair rocker!
not necessarily, he or she could have a injury. check your hamster for cuts before believing its pregnant.
A female hamster can get pregnant if it mates with a male hamster.
it means if she is able to get pregnant
no
A pregnant hamster, by definition, must be female.
No, a hamster needs a mate to become pregnant.
It means your hamster is pregnant. Take her to the vet to she how far along she is Asap
It likely means that maybe your male hamster is not a male,its a female and she is pregnant
It is very possible that a dwarf hamster may die if you step on it and it has blood from its nose. The hamster can be taken to a vet if you are worried.
If your hamster is noticably bigger, it is probably pregnant.