Phantom Pregnancy?

It is one month since our pooch went on heat for the first time.

She was in the local dog kennels during that time and the staff were aware of her situation.

Also extremely aware of her situation was the male desexed dog in the enclosure with her, who "mated" with her.

As far as we know she has not had a chance to mate with an entire dog but we have both noticed that her nipples are quite big, she is putting on weight... and she has also gone off her food (although both these last two could be attributed to the fact that Kougra has been feeding her (LOTS!) She has also been much quieter of late and not as keen to run around like mad .....

Online research indicates that going off food, behaviour changes and changes in nipple size are good signs of pregnancy BUT apparently dogs are quite prone to phantom pregnancies where they act and react as if they are pregnant after having been in season.

Anyway it is off to the vet tomorrow to see if he can shed any light on the subject.