HELP !!! My st bernard made my american eskimo pregnant..... what to do now?

She's probably pregnant. An interesting mix, but if you don't want the puppies get her spayed. There isn't much of a problem for the puppies regarding their sizes as they will be a mixture of both of their DNA. Even rottweiler puppies are small at birth (and they can eventually become 168Ib of solid muscle) but a 32Ib dog is quite capable of giving birth to them. She is quite likely to have a trouble free pregnancy and whelping (giving birth). The offspring of this match are likely to be large to very large dogs in adulthood, so you should warn potential purchasers of the puppies of that (if you decide to let her have them).