Definition of lowâpressure. 1  1 : having, exerting, or operating under a relatively small pressure. 2  2 : easygoing.
Today some vets will spay/neuter at eight weeks of age, while other adhere to the old practice of six months of age. The average age at which pets are spayed or neutered is four months. Adolescent cats and dogs as young as five months can get pregnant.
Somewhere between 3-5 weeks pregnant. I'm sure your dog is at least 2 yrs old, been tested for all genetic problems, has a champion title and was bred to a male that had the same things too. If not, then I strongly suggest you spay her now.