Paddington had a false pregnancy once and now she is having a real one (two weeks to go!
) - and I definitely could tell early on during this real one that she was. Unlike the first time, when I thought she was pregnant, in the first three weeks of this cycle, she was just drained of energy - she spent most of her day and evening up in the bed - and she threw up a few times. Then about three weeks in, I noticed she wasn't eating as much. We know our babies so well - if you notice a BIG difference in her - you may hear the pitter patter of tiny yorkie feet soon!!
good luck