Do not disturb the litter for at least 14 days. If the nest is disturbed the mother may kill the babies and eat them. If one of the babies gets away from the others, don't worry, the mother will retrieve it. The cage should be cleaned two weeks after birth and the babies should be separated from the mother at 28 days.
Also be sure to to separate the Mother and babies from the daddy hamster. The daddy hamster will harm the babies and the mom always needs to be with her babies.
{<3}Good luck, and congratulations on your little baby hamsters! ~GIRandDONUT{<3}