Mogli used to shiver when he'd come back from the groomer for a week or two ... I always attributed it to the fact that he'd go from bigfoot the hairy monster to a shaved little beauty ...
If she's acting normal, just shivering, I'd leave it be. But at 20 weeks you also may want to get a vet-look-over ...
__________________  Stash, Poco & Wicket, Mogli,
Benny  |