
I never had success with the temp either, if you skewer poo it gives a different reading to just the rectal temp.
Bitches all act differently, some pop them out quickly with very little warning, others are trying for an Oscar with their performance, all you can do is watch and wait, I let mine carry on as normal during the day and take them to bed with me at night with the bed suitably protected so any restlessness I am aware of, so far they have waited till morning to go into labour, one was done & dusted in 4hrs,the other had 2 litters and it was nearly midnight before she had the first pup having started at 7-8am.
You have to be patient and try not to pass anxiety on to the dog or she may delay things.
Your vet shouldn't mind you ringing for over the phone advice, I did it a lot with my first litter as well as having 2 mentors at the end of the phone.
Good Luck