Dog not pregnant- Want to foster a Mom

[JudyBono]

Hi,
Took my shih tzu to vet last nite, they performed a blood test, said it was negative after only about 10 minuted. Did not palpitate her.Her teets are very pronounced and her vulva very swollen. 31 days since mating- (only mated once) she is 3 years old. Are these tests accurate, could she be pregnant?
Anyway, I plan to have her spayed as soon as false pregnancy over(vet recommended waiting).
Next question, I do not plan to breed her again, however, my daughter is disappointed, someone had suggested being a foster to a pregnant dog.We could help a dog and my daughter could help, ( she wants to be a vet). I really bred Oreo because she has wanted to, not the most responsible thing I know. But now, I feel very prepared , I have spent weeks studying it. Has anyone done this that could give me some insight into it. I called our local HS and left a message.
Any input would be great.
Thanks, Judy

[barnjess]

These tests are not 100%, have you considered an ultrasound scan

[JudyBono]

She is about 31 days from mating. I have read they do not pick up the relaxin if it is a small litter , under 3 pups. The vet was so short with me and would not palpitate her even. Does their vulva remain swollen i a false pregnancy. It is really swoolen especially above it and the folds are not even there anymore. so frustrated.She had put her on an antibiotic about 10 days ago when I was in because she had a colorless discharge which I have read is normal with pregnancy. Maybe I need to change vets. I was thinking to treat her as pregnant and wait another week or two , she should start showing by then at 5 weeks right?
Thanks for your help.
judy

[barnjess]

A clear or white discharge is normal, yep I would change vets if I were you, can you post pics of her? From what I have heard ******* who are going through a phantom dont have a discharge only pregnant *******, i dont know if this is correct or not, my ******* have never had a phantom.