Hi Janet -- It's very possible that she would not be "showing" at 17 days.
My litters have been birthed 25 days after the mating. About a week before the
birth (18 days) is when my females started to feel just a little bit heavier in
my hands. And not until a just days before the birth would the belly be
noticably fatter visually -- the moms became pear shaped (or as someone on the
list described to me -- looked like a minature hippo).
-- Donna A.
from Janet Morrow:
<snip>
> Also, it has been 17 days since the mated, but she is not getting fat yet. I
> have
> also not seen them mate again. This is her first litter, if she is
> pregnant.
>
> Is this normal or would this mean she is having a small litter?
<snip>